Ratio & Proportions Level 3 Quiz-2

1. A, B and C play cricket. The ratio of the runs scored by A and B is 3 : 2. The ratio of the runs scored by B and C is 5 : 2. Together, they score 319 runs. How many runs did B make?

2. A, B and C who together earn Rs.7,500 spend 80%, 70% and 60% of their respective salaries. If their savings are in the ratio as 2 : 3 : 4, find the salary of B.

3. The ratio of number of boys to girls in a school is 4 : 5. If 40% of the boys and 50% of the girls are adults, what percentage of students are not adults?

4. The present age of a father is four times the age of his son. Seven years ago age of the father was three years more than six times of age his son. What is the present age of the father?

5. If two mixtures X and Y containing alcohol and water in the ratio of 1 : 2 and 2 : 3 respectively are mixed in the ratio of 3 : 5, then what is the ratio of alcohol to water in the resulting mixture?

6. In a colony, the ratio of married to unmarried people is 1: 8. If 3/4th of the married are females and 2/3rd of unmarried are females, then what percent of the married and unmarried people are females?

7. The sum of three numbers x, y, z is 6000. If we reduce the first number by 100, the second number by 200, and the third number by 600, then the new ratio of x & y = 1: 2 & the new ratio of y & z =3: 4. Find x+y.

8. Three jars contain alcohol to water in the ratios 2:5, 1:3 and 1:1. If all the three solutions are mixed, what will be the ratio of alcohol to water in final solution?

9. In a mixture of 45 L, the ratio of milk to water is 4:5. If 10 L water is added to the mixture, the ratio of milk to water changes to a new ratio. If we want ratio of milk and water to change back to the original value, how much milk is to be added now?

10. Rs.432 is divided among three workers A, B and C such that 8 times A’s share is equal to 12 times B’s share which is equal to 6 times C’s share. How much did A get?