The law that 'Bad money drives good money out of circulation' was given by :
The law that 'Bad money drives good money out of circulation' was given by : Correct Answer Fisher
Let,Mim's present age = x and Bina's present age = x + 10 According to question, x + 10 + 7 = (x + 7)x2 So, x = 3 So, Bina's Present age = 3 + 10 = 13