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

A. 7 months**B. 10 months**

C. 9 months

D. 11 months

Explanation:

7*5: 5*x = 7:10

x = 10