Aptitude Day 82

Ratio and Proportion:

Answer of Day 81:   10, 15 and 35.

  

1. Salaries of A and B are in the ratio 3:4. If the salary of each is increased by 1000, the ratio becomes 13:20. What’s the B’s present salary?

Solution:

                  Let their salaries be 3x and 4x.

                  3x+1000/ 4x+1000 = 13/20

                  60x+20000 = 52x+13000

                  8x = 7000

                  4x = 3500

                  B’s present salary is 4x+1000 = 4500.

2. If 6000 be divided among A, B and C in such a way that B gets 1/2 of A and C gets 1/3 of B, then the share of A is:

Solution:

                Their ratio will be A: 1/2 A: 1/3B

                This becomes, A: 1/2A: 1/6A

                6:3:1.

               Total parts = 10.

               The share of A is 6(6000/10) = 3600.