The ratio of investments of two partners A and B is 7:5 and the ratio of their profits is 7:10. If A invested the money for 5 months, find for how much time did B invest the money ?

The ratio of investments of two partners A and B is 7:5 and the ratio of their profits is 7:10. If A invested the money for 5 months, find for how much time did B invest the money ?

A 11 months

B 9 months

C 7 months

D 10 months

Solution

Correct Answer: Option D

7x5: 5xk = 7:10
k = 10 months