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 2 months, find for how much time did Q invest the money?	Choose one:  A) 8  B) 10  C) 18  D) 4  E) 12
7*5: 2*x = 7:10   x = 4   Answer:4   Answer is 4
<result>D</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 2 months, find for how much time did Q invest the money?