Quantitative Aptitude Ratio & Proportion Quest 3

1. A and B together have Rs. 1210 with them. If 4 / 15 of A’s amount is equal to 2 / 5 of B’s amount, how much amount does B have ?

2. The average age of three boys is 25 years and their ages are in the proportion 3 : 5 : 7. The age of the youngest boy is :

3. If a carton containing a dozen mirrors is dropped, which of the following cannot be the ratio of broken mirrors to unbroken mirrors ?

4. The L.C.M. and H.C.F. of two numbers z and y are l and h respectively. Then :

5. Five bananas and four apples cost as much as three bananas seven apples The ratio of the cost of one banana to that of one apple is :

6. The ratio of two numbers is 3 : 4 and their sum is 420. The greater of the two numbers is :

7. An amount of Rs. 2430 is divided among A, B and C such that if their sharse be reduced by Rs. 5, Rs. 10 and Rs. 15 respectively, thr remainders shall be in the ratio 3 : 4 : 5. The share of B is :

8. The ratio between two numbers is 3 : 4 and their l.c.m. is 180. The first number is :

9. Two whole numbers whose sum is 72 cannot be in the ratio :

10. The salaries of A, B and C are in the ratio of 1 : 2 : 3. The salary of B and C together is Rs. 6000. By what percent is the salary of C more than that of A ?