Question

The ratio of income of p and q is 7:8 and the ratio of their expenditures is 9:10. Who saves more? (Assume that the income of each is at least equal to his/her expenditure)

Answer 1

income of p and q are 7x and 8x respectively.It can also be written as 14x and 16x by multiplying both by 2.Now on minus there expenditures we get savings (14-9)x and (16-10)x i.e., 5x and 6x respectively.Clearly q's saving is more.