Dear Readers,
1-A grinder was marked at Rs 3600. After giving a discount of 10% the dealer made a profit of 8%, calculate the cost price.
(A) Rs 3000
(B) Rs 3312
(C) Rs 3240
(D) Rs 2960
Q.2. A and B can do a piece of work in 72 days, B and C can do it in 120 days, and A and C can do it in 90 days. When A, B and C work together, how much work in finished by them in 3 days-
(A) 1/40
(B) 1/30
(C) 1/20
(D) 1/10
Q.3. Ram sells his goods 25% cheaper than Shyam and 25% dearer than Hari. What percentage is Hari's good cheaper than Shyam's?
(A) 25
(B) 40
(C) 33.33
(D) 50
Q.4. The average of 8 numbers is 27. If each of the numbers is multiplied by 8, find the average of new set of numbers?
(A) 1128
(B) 938
(C) 316
(D) 216
Q.5. A sum of money is paid back in two annual installments of Rs 1764 each allowing 5% compound interest. The sum borrowed is-
(A) Rs 2660
(B) Rs 2600
(C) Rs 3280
(D) Rs 3860
Q.6. A shopkeeper purchased a T.V. for Rs 2000 and a radio for Rs 750. He sells the T.V. at a profit of 20% and the radio at a loss of 5%. The total loss or gain is -
(A) Rs 352.50 profit
(B) Rs 362.50 profit
(C) Rs 333.2 loss
(D) Rs 300 loss
7-The ratio of the length of the parallel sides of a trapezium is 3 : 2. The shortest distance between them is 15 cm. If the area of the trapezium is 450 cm^2 ., the sum of lengths of the parallel sides is -
(A) 15 cm.
(B) 36 cm.
(C) 42 cm.
(D) 60 cm.
Q.8. The units digit in the product 7^71 × 6^63 × 3^65 is -
(A) 1
(B) 2
(C) 3
(D) 4
Q.9. The marked price of a watch is Rs 1600. The shopkeeper gives successive discounts of 10% and x% to the customer. If the customer pays Rs 1224 for the watch, the value of x is -
(A) 5
(B) 10
(C) 15
(D) 20
Q. 10. Arun can complete a work in 10 days, Rahul can complete the same work in 20 days and Deepak in 40 days. Arun starts working on the first day, Rahul works for the second day and Deepak works for the third day. Again Arun works for fourth day and Rahul for fifth day and so on. If they continued working in the same way, in how many days will the work be completed?
अरुण एक काम को 10 दिन में कर सकता है, राहुल उसी काम को 20 दिनों में कर सकता है और दीपक इसे 40 दिनों में कर सकता है। अरुण पहले दिन काम करता है, राहुल दुसरे दिन काम कर सकता है और दीपक तीसरे दिन काम करता है| पुनः अरुण चौथे दिन काम कर सकता है और राहुल पांचवे दिन काम करता है और इसी तरह से प्रक्रिया चलती रहती है। यदि वे इस तरह से काम करना जारी रखते हैं, तो कितने समय में काम समाप्त हो जाएगा?
(A) 15 days
(B) 16.5 days
(C) 15.5 days
(D) 17 days
Answer:
1. Sol. (1)
2. Sol. (3)
3. Sol. (2)
4. Sol. (4)
5. Sol. (3)
6. Sol. (2)
7. Sol. (4)
8. Sol. (4)
9. Sol. (3)
10. Sol. (2)
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MAHENDRA GURU