Question Paper CDS
1. A shopkeeper sells his articles at their cost price but uses a faulty balance which reads 1000 g for 800 g. What is his actual profit percentage?
A. 25%
B. 20%
C. 40%
D. 30%
Answer:A
2. The difference between compound interest and simple interest for 2 years at the rate of 10% over principal amount of Rupee X is Rupee 10. What is the value of X?
A. Rupee 100
B. Rupee 1,000
C. Rupee 500
D. Rupee 5.000
Answer:B
3. A sum of money becomes 3 times in 5 years at simple interest. In how many years will the same sum become 6 times at the same rate of simple interest?
A. 10 years
B. 12 years
C. 12.5 years
D. 10.5 years
Answer:C
4. A man buys 200 oranges for Rupee 1,000. How many oranges for Rupee 100 can he sell so that his profit percentage is 25%?
A. 10
B. 14
C. 16
D. 20
Answer:C
5. If m% of m + n% of n = 2% of (m x n), then what percentage of m is n?
A. 50%
B. 75%
C. 100%
D. Cannot be determined due to insufficient data
Answer:C
6. If the side of a cube is increased by 100%, then by what percentage is the surface area of the cube increased?
A. 150%
B. 200%
B. 300%
D. 400%
Answer:C
7. The LCM of two integers is 1237. What is their HCF?
A. 37
B. 19
C. 1
D. cannot be determined
Answer:C
8. The distance between two points (A and B) is 110 km. X starts running from point A at a speed of 60 km/hr and Y starts running from point B at a speed of 40 km/hr at the same time. They meet at a point C, somewhere on the line AB. What is the ratio of AC to BC?
A. 3:2
B. 2:3
C. 3:4
D. 4:3
Answer:A
9. A is thrice as efficient as B and hence complete a work in 40 days less than the number of days taken by B. What will be the number of days taken by both of them when working together?
A. 22.5 days
B. 15 days
C. 20 days
D. 18 days
Answer:B
10. If 10 persons can dig 8 feet trench in 12 days, then how many days will 8 persons take to dig 6 feet trench?
A. 10 days
B. 10.25 days
C. 11 days
D. 11.25 days
Answer:B
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