Digital Sum MCQ Set 3

DIGITAL SUM MCQ SET 3

1. During the first year , the population of a town increased by 12% . The next year , due to some contagious disease , it decreased by 8% . At the end of the second year , the population was 64,400 . Find the population of the town at beginning of the first year .

(a) 50,000

(b) 54,750

(c) 62,500

(d) 50,500

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Answer: C

2. A manufactured item of cost Rs.12,500 , sold at 10% profit . The supplier the sold at a 5.5% profit to the shopkeeper . The shopkeeper marks it at Rs.2,393.75 higher than his cost price and allowed a 10% discount to the customer . Find the profit earned by the shopkeeper .

(a) 653.75

(b) 693.75

(c) 703.75

(d) 600.75

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Answer: C

3. The average score in an english exam of a class of 45 students in a coaching centre is 52 . A group of 6 boys having an average score of 40 leave the class and another group of eight boys having an average score of 43 join the class . What is the new average score of the class?

(a) 48

(b) 53

(c) 49.5

(d) 52

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Answer: D

4. The value of 
(1018) – 1019 x 1017 + 1015 x 1012 – 1016 x 1011

(a) 1

(b) 4

(c) 3

(d) 5

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Answer: D

5. X and Y earn an average income of Rs.72000 per month , out of which they saved an average amount of Rs.38800 per month , such that X saved Rs.5,600 less than Y . If the expenditure of X is 55% of his income , then find the percentage expenditure of Y .

(a) 20%

(b) 25%

(c) 30%

(d) 35%

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Answer: D

6. The compound interest on a certain sum of money in one year is Rs.64860 and on second year is Rs.7840 . Find compound interest in fourth year :

(a) Rs.10240

(b) Rs.11340

(c) Rs.10780

(d) Rs.9850

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Answer: B

7. If the average marks of 1/5 of a class is 77% and that of 1/4 of the class is 85% and the average marks of the rest of the class is 52% . Find the average marks of the whole class?

(a) 57.75%

(b) 65.25%

(c) 68.55%

(d) 43.50%

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 Answer: B

8. The difference between C.I. and S.I. on a certain sum of money at 16% per annum compounded annually in 3 years is Rs.3792 . Then find the principal .

(a) Rs.31250

(b) Rs.62500

(c) Rs.39062.50

(d) Rs.46875

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Answer: D

9. Which one of the following is a perfect square?

(a) 6250.49

(b) 1250.49

(c) 5768.28

(d) 1354.24

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Answer: A

10. Which one of the following is a perfect square?

(a) 2361.96

(b) 2758.28

(c) 7256.84

(d) 6250.49

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Answer: A