1.
If 15% of Y is same as 21% of Z, then 12.5% of Y is equal to what per cent of Z?
2.
In a class, 15% of total number of students failed in Science, 25% of total number of students failed in Maths and 10% of total number of students failed in both. How much percentage of students passed in both Maths and Science?
3.
What is 4th proportional in 9, 13 and 153?
4.
Find A:B:C:D when A:B = 2:3 ; B:C = 7:9 ; C:D = 5:7
5.
Rs. 20400 was divided in two parts and then invested. One part invested at 6.25% for 8 years yields the same interest as the other part invested at 7% for 5 years. What is the value of smaller part?
6.
The population of a city is 50,000 at present. It increases at the rate of 10% per annum. What will be its population 3 yr from now?
7.
Ramesh sees a thief at a distance of 80 m. Ramesh starts chasing the thief who is running at a speed of 5 m/s. Ramesh is chasing him with a speed of 7 m/s. How much distance does the thief covers before Ramesh catches him?
8.
12 years ago, age of P was 3 times the age of Q. After 12 years, ratio of ages of Q to P will be 2:3. What is the present age of P?
9.
Average age of a family of 4 members was 19 years, 4 years back. Birth of a new child kept the average age of the family same even today. How old is the child today?
10.
A can work 5 times faster than B and takes 60 days less than B to complete the work. In how many days does A and B individually can complete the work?
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