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.
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