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 10 months , find for how much time did q invest the money ?
"7 * 5 : 10 * x = 7 : 10 x = 20 answer : c"
multiply(multiply(divide(7, 5), divide(10, 7)), 10)