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एक परीक्षा में 1500 लड़के और 1100 लड़कियाँ है 60 % लड़के और 50 % लड़कियाँ पास हो जाते है तो कितने प्रतिशत उम्मीददवार फ़ैल हुए ?
(A) 46.4 %
(B) 36.36 %
(C) 39.58 %
(D) 49.6 %
Sol :
Total candidates = 1500 + 1100 = 2400
1500
Total failed candidates = 2400 – 1450 = 950
Required percentage = 
2.) Radheysyam’s salary is 20% more than that of Mohan salary. If Radheysyam saves Rs. 720 which is 4 % of his salary, then Mohan salary is?
राधेश्याम की आय मोहन की आय से 20 % अधिक है यदि राधेश्याम 720 रुपए बचाता है जो की उसकी आय का 4 % है तो मोहन की आय क्या है
(A) Rs 15000
(B) Rs 12000
(C) Rs 10000
(D) Rs 1500
Sol : Let Radheysyam’s salary be
Mohan’s salary is
3.) A trader bought 10 kg of apples for Rs. 415 out of which 2 kg apples were found to be rotten. If he wishes to make a profit of 20% , at which rate should he sell the remaining apples per kg?
एक व्यापारी 10 किलोग्राम सेब 415 रुपए के खरीदता है जिसमे से 2 किलोग्राम सेब ख़राब हो जाते है यदि वो 20 % का लाभ कमाना चाहता है तो उसे बचे हुए सेबो को कितने रुपए किलोग्राम से बेचने चाहिए ?
(A) 50
(B) 55.33
(C) 5.53
(D) 49.50
Sol :
selling price of 10 apples =
= 498Remaining apples = 10-1 = 9
the remaining apples per kg cost = 
4.) A person bought 76 cows and sold 20 cows at 15% profit, 40 cows at 19% profit and remaining 16 cows at 25% and got a profit of Rs.7300 as a whole. Find the cost price of each cow?
एक आदमी 76 गाये खरीदता है 20 गायों को वो 15 % के लाभ पर बेचता है 40 गायो को 19 % के लाभ पर और बचे हुए 16 गायो को 25 % के लाभ पर और उसे 7300 का कुल लाभ होता है तो एक गाय का क्रय मूल्य ज्ञात कीजिये ?
- Rs. 450
- Rs. 480
- Rs 420
- Rs 500
Let cost price of each cow is Rs.
According to question,
5.) If 8 men or 12 boys can do a piece of work in 16 days, so in how many days the same work will be finished by 20 men and 6 boys.
8 आदमी या 12 लड़के किसी काम को 16 दिनों में कर सकते है तो 20 आदमी और 6 लड़के इसी काम को कितने दिनों में करेंगे ?
(B)
(C) 12
(D)
Sol :
Required days = 
= 
6.) The greatest number that will divide 729 and 901 leaving remainder 9 and 5 respectively, is
सबसे बड़ी संख्या ज्ञात कीजिये जो 729 और 901 को भाग देने पर शेषफल 9 और 5 मिलता है ?
1.15
2.16
3.18
4.20
-
SOL :B
- 93
- 84
- 57
- 56
Required number = HCF of (729-9)= 720
and (901- 5) = 896
hence the required HCF is 16.
Q7. If
n then find the value of n ?यदि
n हो तो m का मान ज्ञात कीजिये?
n =
.Q.8 The sum of two digit number is 16. If the digit is interchanged the number is formed 18 less than the original number. Find the original number.
यदि दो अंको की किसी संख्या के अंको का योग 16 है तथा अंको को पलटकर बनाई गई संख्या मूल संख्या से 18 कम है तो मूल संख्या ज्ञात कीजिये?
SOL: (C)
Let the number be
So
. According to question,
+ 
On solving both equation we get
So required number is 97.
Q.9- A and B can do a piece of work in 40 days and 30 days respectively. They worked together for 12 days after that B was replaced by C. the work finish in next 8 days. In how many days C can alone finish the work?
A और B किसी काम को 40 दिन और 30 दिन में करते है दोनों साथ में काम करते है 12 दिन बाद B के स्थान पर C आ जाता है तो काम अगले 8 दिनों में समाप्त होता है तो C अकेला इस काम को कितने दिनों में करेगा?
(A) 60 days
(B) 50 days
(C) 90 days
(D) 80 days
SOL: (C) 120
A = 40 days----- 3
B = 30 days ---- 4
(12+8) × 3 + 4 × 12 + x × 8 = 120
x =
daysQ-10 Radhika goes to her school from her house at a speed of 8 km/hr and returns at a speed of 10 km/hr. if she takes 18 hours in total travel, then the distance between her house and school is:
राधिका अपने घर से स्कूल 8 किमी /घंटा की चाल से जाती है और वापस 10 किमी / घंटा की चाल से आती है यदि उसे आने जाने में 18 घंटे लगते है तो उसके घर से स्कूल की दूरी ज्ञात कीजिये ?
(A) 10 km
(B) 12 km
(C) 15 km
(D) 20 km
SOL: (D)
Answer Key
1. C
2. A
3. B
4. D
5. A
6. B
7. A
8. A
9. C
10. D
2. A
3. B
4. D
5. A
6. B
7. A
8. A
9. C
10. D
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