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SSC CHSL Quiz : Quantitative Aptitude | 30-03-2020

Priyanka Mahendras
SSC CHSL Quiz : Quantitative Aptitude | 23 -03-2020







Dear Readers,



As SSC CHSL notification is out and candidates have started their preparation for this exam. Mahendras also has started special quizzes for this examination. This series of the quizzes is based on the latest pattern of the SSC CHSL examination. Regular practice of the questions included in the quizzes will boost up your preparations and it will be very helpful in scoring good marks in the examination.


Q. 1. Divide Rs.63145 between A, B, C, D such that A: B = 3: 4, B: C = 5: 6, C: D = 11: 9, then difference between the average of shares of A and D together and B and C together is -

63145 рд░ु. рдХो A, B, C, D рдоें рдЗрд╕ рдк्рд░рдХाрд░ рдмाँрдЯा рдЬाрддा рд╣ै рдХि A: B = 3: 4, B: C = 5: 6, C: D = 11: 9, рддो A рдФрд░ D рдХे рдПрдХрд╕ाрде рд╣िрд╕्рд╕े рдФрд░ B рдФрд░ C рдХे рдПрдХрд╕ाрде рдФрд╕рдд рд╣िрд╕्рд╕े рдХा рдЕрдиुрдкाрдд рд╣ै- 


(A) Rs.3579.5

(B) Rs.3795.5

(C) Rs.3759.5

(D) Rs.3559.5

Q. 2. The wages of laborers in a factory has increased in the ratio 22: 25 and their number decreased in the ratio 15: 11. What was the original wage bill of the factory if the present bill is Rs.103125?

рдПрдХ рдлैрдХ्рдЯ्рд░ी рдоें рдордЬрджूрд░ों рдХी рдордЬрджूрд░ी рдоें 22: 25 рдХे рдЕрдиुрдкाрдд рдоें рд╡ृрдж्рдзि рд╣ुрдИ рдФрд░ рдЙрдирдХी рд╕ंрдЦ्рдпा рдоें 15: 11 рдХे рдЕрдиुрдкाрдд рдоें рдХрдоी рд╣ुрдИ рддो рдлैрдХ्рдЯ्рд░ी рдоें рдк्рд░ाрд░рдо्рднिрдХ рдордЬрджूрд░ी рдмिрд▓ рдХ्рдпा рдеा, рдпрджि рд╡рд░्рддрдоाрди рдмिрд▓ 103125 рд░ू. рд╣ै?


(A) Rs.127350

(B) Rs.122100

(C) Rs.123750

(D) Rs.132750

Q. 3. A contractor undertakes to dig a canal 43.2 km. in 350 days and employees 45 men for this task. He finds that after 200 days of work that only 16 (1/5) km. of the canal has been completed. The number of extra men he must employee to finish the work in time is -

рдПрдХ рдаेрдХेрджाрд░ 43.2 рдХिрдоी. рдХी рдирд╣рд░ рдХो 350 рджिрдиों рдоें рдЦोрджрдиे рдХा рдХाрдо рд▓ेрддा рд╣ै рдФрд░ 45 рдЖрджрдоिрдпों рдХो рдХाрдо рдкрд░ рд░рдЦрддा рд╣ै। 200 рджिрдиों рдХे рдмाрдж рдЙрд╕े рдкрддा рдЪрд▓рддा рд╣ै рдХि рдХेрд╡рд▓ 16 (1/5) рдХिрдоी. рдХी рдирд╣рд░ рдкूрд░ी рд╣ुрдИ рд╣ै। рдХाрд░्рдп рдХो рд╕рдордп рдкрд░ рд╕рдоाрдк्рдд рдХрд░рдиे рдХे рд▓िрдП рдЙрд╕े рдХिрддрдиे рдЕрддिрд░िрдХ्рдд рдЖрджрдоिрдпों рдХो рдХो рдХाрд░्рдп рдкрд░ рд░рдЦрдиा рд╣ोрдЧा?


(A) 50

(B) 45

(C) 55

(D) 60

Q. 4. The average monthly income of a person in a certain family of 5 members is Rs.16675. What will be approximate monthly average income of a person in the same family if the income of one person increased by Rs.12275 per year?

рдкांрдЪ рд╕рджрд╕्рдпों рдХे рдПрдХ рдкрд░िрд╡ाрд░ рдоें рдПрдХ рдЖрджрдоी рдХी рдФрд╕рдд рдоाрд╕िрдХ рдЖрдп 16675 рд░ू. рд╣ै। рдЙрд╕ी рдкрд░िрд╡ाрд░ рдоें рдПрдХ рдЖрджрдоी рдХी рдоाрд╕िрдХ рдФрд╕рдд рдЖрдп рд▓рдЧрднрдЧ рдХ्рдпा рд╣ोрдЧी рдпрджि рдПрдХ рдЖрджрдоी рдХी рдФрд╕рдд рдЖрдп рдоें рдк्рд░рддि рд╡рд░्рд╖ 12275 рд░ू. рдХी рд╡ृрдж्рдзि рд╣ो? 


(A) Rs.16700

(B) Rs.17880

(C) Rs.16800

(D) Rs.16880


Q. 5. A train travels at a certain average speed for a distance of 63 km. and then travels a distance of 72 km. at an average speed of 6 km. /hr. more than its original speed. If it takes 3 hours to complete the total journey, what is the original speed of the train in km. /hr.?

рдХोрдИ рд░ेрд▓рдЧाреЬी рдХिрд╕ी рдФрд╕рдд рдЪाрд▓ рд╕े 63 рдХिрдоी. рджूрд░ी рддрдХ рдЪрд▓рддी рд╣ै рдФрд░ рддрдм рдЕрдкрдиी рдк्рд░ाрд░рдо्рднिрдХ рдЪाрд▓ рд╕े 6 рдХिрдоी./рдШं. рдЕрдзिрдХ рдХी рдФрд╕рдд рдЪाрд▓ рд╕े 72 рдХिрдоी. рдХी рджूрд░ी рддрдп рдХрд░рддी рд╣ै। рдпрджि рдЙрд╕े рдкूрд░ी рдпाрдд्рд░ा рд╕рдо्рдкрди्рди рдХрд░рдиे рдоें 3 рдШंрдЯे рд▓рдЧрддे рд╣ै, рддो рд░ेрд▓рдЧाреЬी рдХी рдк्рд░ाрд░рдо्рднिрдХ рдЪाрд▓ рдХिрдоी./рдШं. рдоें рдХ्рдпा рд╣ै? 


(A) 24 km/hr.

(B) 33 km/hr.

(C) 42 km/hr.

(D) 66 km/hr. 


Q. 6. A sum of money at simple interest amount to Rs.8118 in 3 years and to Rs.9449 in 4 years. The sum is-

рдПрдХ рдзрдирд░ाрд╢ि рд╕ाрдзाрд░рдг рдм्рдпाрдЬ рдХी рджрд░ рд╕े 3 рд╡рд░्рд╖ो рдоें 8118 рд░ू. рдФрд░ 4 рд╡рд░्рд╖ों рдоें 9449 рд░ू. рд╣ो рдЬाрддी рд╣ै рддो рдзрдирд░ाрд╢ि рдХ्рдпा рд╣ै?


(A) Rs.4135

(B) Rs.4130

(C) Rs.4120

(D) Rs.4125 


Q. 7. If tan x + cot x = 3, then sec2 x + cosec2 x is equal to -

рдпрджि tan x + cot x = 3, рддो sec2 x + cosec2 x рдХे рдмрд░ाрдмрд░ рд╣ै-


(A) 3

(B) 9

(C) 12

(D) 15

Q. 8. A cone of height 9 cm. with diameter of its base 18 cm. is carved out from a wooden soiled sphere of radius 9 cm. The percentage of the wood wasted is -

9 рд╕ेрдоी. рдКँрдЪाрдИ рдХे рд╢ंрдХु рдХे рдЖрдзाрд░ рдХा рд╡्рдпाрд╕ 18 рд╕ेрдоी. рд╣ै, 9 рд╕ेрдоी. рдд्рд░िрдЬ्рдпा рд╡ाрд▓े рд▓рдХреЬी рдХे рдаोрд╕ рдЧोрд▓े рдоें рд╕े рдиिрдХाрд▓ा рдЬाрддा рд╣ै рддो рдирд╖्рдЯ рд╣ुрдИ рд▓рдХреЬी рдХा рдк्рд░рддिрд╢рдд рдХ्рдпा рд╣ै? 


(A) 50%

(B) 25%

(C) 40%

(D) 75%

Q. 9. If a long wire in the shape of an equilateral triangle is turned into a square, the area are in the ratio of -

рдпрджि рдПрдХ рд▓рдо्рдмा рддाрд░ рд╕рдордмाрд╣ु рдд्рд░िрднुрдЬ рдХे рд░ूрдк рдХा рд╣ै, рдХो рд╡рд░्рдЧ рдХा рд░ूрдк рджे рджिрдпा рдЬाрддा рддो рдЙрдирдХे рдХ्рд╖ेрдд्рд░рдлрд▓ों рдоें рдХ्рдпा рдЕрдиुрдкाрдд рдХ्рдпा рд╣ै? 


(A) 4: 3 root 3

(B) 2: root 3

(C) 4: 9 root 3

(D) 8: 3 root 3

Q. 10. If x : y = 9 : 5 then what is the value of (6x – 3y) : (2x + 5y) is - 

рдпрджि x : y = 9 : 5 рддो (6x – 3y) : (2x + 5y) рдХा рдоाрди рд╣ै- 


(A) 43/30

(B) 39/43

(C) 30/43

(D) 31/42

Answer:
1. Sol. (C) 

A: B = 3: 4, B: C = 5: 6, C: D = 11: 9
A: B: C = 15: 20: 24, C: D = 11: 9
A: B: C: D = 165: 220: 264: 216
(A + D)'s share/(A + D) рдХा рд╣िрд╕्рд╕ा = [(165 + 216)/ (165 + 220 + 264 + 216)] × 63145
= 27813
(B + C)'s share/(B + C) рдХा рд╣िрд╕्рд╕ा = [(220 + 264)/ (165 + 220 + 264 + 216)] × 6314
= 35332
Required difference/рдЕрднीрд╖्рдЯ рдЕрди्рддрд░ = [(35332/2) – (27813/2)] = 17666 – 13906.5 = Rs.3759.5

2. Sol. (C) 

Ratio of increase of wages/рдордЬрджूрд░ी рдоें рд╡ृрдж्рдзि рдХा рдЕрдиुрдкाрдд = 22: 25
Ratio of decrease of number of laborers/рдХрд░्рдордЪाрд░िрдпों рдХी рд╕ंрдЦ्рдпा рдоें рдЧिрд░ाрд╡рдЯ = 15: 11
Compound ratio of wages of laborers/рдХрд░्рдордЪाрд░िрдпों рдХी рдордЬрджूрд░ी рдХा рд╕ंрдпुрдХ्рдд рдЕрдиुрдкाрдд
= 22 × 15: 25 × 11 = 330: 275
Final bill/рдЕंрддिрдо рдмिрд▓ = Rs.103125
275 ratio/рдЕрдиुрдкाрдд = 103125
330 ratio/рдЕрдиुрдкाрдд = Rs.123750

3. Sol. (B) 

Let x men required to finish the work on time.
рдоाрдиा x рдЖрджрдоी рдХाрд░्рдп рдХो рд╕рдордп рдкрд░ рдкूрд░ा рдХрд░рдиे рдХे рд▓िрдП рдЖрд╡рд╢्рдпрдХ рд╣ैं ।
x = [(45 × 27 × 200)/ {6 (1/5) × 150}]
x = 100
Extra men/рдЕрддिрд░िрдХ्рдд рдЖрджрдоी = 100 – 55 = 45

4. Sol. (D) 

Total monthly income of family of 5 members/5 рд╕рджрд╕्рдпों рд╡ाрд▓े рдкрд░िрд╡ाрд░ рдХी рдХुрд▓ рдоाрд╕िрдХ рдЖрдп = 16675 × 5 = 83375
According to the question/рдк्рд░рд╢्рдиाрдиुрд╕ाрд░,
Monthly increase/рдоाрд╕िрдХ рд╡ृрдж्рдзि = 12275/12= Rs.1023
Total monthly income/рдХुрд▓ рдоाрд╕िрдХ рдЖрдп = 83375 + 1023 = 84400
Increased average monthly income/рдмреЭी рд╣ुрдИ рдФрд╕рдд рдоाрд╕िрдХ рдЖрдп = 84400/5 = 16880

5. Sol. (C) 

Let original speed of train be x km/hr.
рдоाрдиा рдЯ्рд░ेрди рдХी рдоूрд▓ рдЪाрд▓ x рдХिрдоी./рдШंрдЯा рд╣ै ।
[(63/x) + 72/ (x + 6)] = 3
[{63 (x + 6) + 72 × x}/ (x2 + 6x)] = 3
21x + 126 + 24x = x2 + 6x
x2 – 39x – 126 = 0
x2 – 42x + 3x – 126 = 0
(x – 42) (x + 3) = 0
x = 42 km/hr.

6. Sol. (D) 

Simple interest/ рд╕ाрдзाрд░рдг рдм्рдпाрдЬ = 9449 – 8118 = Rs.1331
Simple interest in 3 years/3 рд╡рд░्рд╖ों рдоें рд╕ाрдзाрд░рдг рдм्рдпाрдЬ = 3 × 1331
= Rs.3993
Sum/рдоूрд▓рдзрди (P) = 8118 – 3993 = Rs.4125

7. Sol. (B) 

tan x + cot x = 3
tan2 x + cot2 x = 7
sec2 x + cosec2 x = 1 + tan2 x + 1 + cot2 x
= 2 + tan2 x + cot2x = 2 + 7 = 9

8. Sol. (D) 

Volume of cone/рд╢ंрдХु рдХा рдЖрдпрддрди = (1/3) × p (9)2 × 9 = 243 p cm.3
Volume of sphere/рдЧोрд▓े рдХा рдЖрдпрддрди = (4/3) × p (9)3 = 972 p cm.3
Required difference/рдЕрднीрд╖्рдЯ рдЕрди्рддрд░ = 972 p – 243 p = 729 p
Percentage of wasted wood/рдирд╖्рдЯ рд╣ुрдИ рд▓рдХреЬी рдХा рдк्рд░рддिрд╢рдд = (729 p / 972 p) × 100 = 75%

9. Sol. (A) 

Let length of wire be 3a/рдоाрдиा рддाрд░ рдХी рд▓рдо्рдмाрдИ 3a рд╣ै ।
Area of triangle/рдд्рд░िрднुрдЬ рдХा рдХ्рд╖ेрдд्рд░рдлрд▓ = {(root 3) a2}/ 4
Area of square/рд╡рд░्рдЧ рдХा рдХ्рд╖ेрдд्рд░рдлрд▓ =14
Required ratio/рдЕрднीрд╖्рдЯ рдХ्рд╖ेрдд्рд░рдлрд▓ = [{(root 3) a2}/ 4]/ [(9a2/16)] = {(root 3) × 16}/ (4 × 9)
= 4/(3 root 3) = 4 : (3 root 3)

10. Sol. (B) 

x/y = 9/5
(6x – 3y)/ (2x + 5y) = [{6 × (9/5) – 3}/ {5 × (9/5) + 5}] = 39/43

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