1. In how many years does a sum of Rs. 5000 yield a simple interest of Rs. 16500 at 15% p.a.?

A. 22
B. 24
C. 25
D. 23

Ans. A

2. The radius of a circle is increased by 1%. Find how much % does its area increases ?

A. 1.01%
B. 5.01%
C. 3.01%
D. 2.01%

Ans. D

3. 144 liters of the mixture contains milk and water in the ratio 5: 7. How much milk needs to be added to this mixture so that the new ratio is 23: 21 respectively?

A. 36 liters
B. 40 liters
C. 28 liters
D. 32 liters

Ans. D

4. The income of Nikhil and Hemanth are in the ratio of 4:5 and their expenditure is in the ratio of 2:3. If each of them saves 2000, then find their income.

A. 4000, 6000
B. 4000, 5000
C. 5000, 4000
D. 5000, 6000

Ans. B

5. An alloy contains Brass, Iron, and Zinc in the ratio 2:3:1 and another contains Iron, zinc, and lead in the ratio 5:4:3. If equal weights of both alloys are melted together to form a third alloy, then what will be the weight of lead per kg in new alloy?

A. 1/8
B. 1/9
C. 1/4
D. 1/7

Ans. A