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?	Choose the most appropriate option.
A) 7 months B) 10 months C) 9 months D) 11 months E) 13 months
7*5: 5*x = 7:10   x = 10   ANSWER:10 months
<result>B</result>
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?