If A exceeds B by 40% and B is less than C by 20%, then A:C is
A number exceeds 20% of itself by 40. The number is (a) 50 (b) 60 (c) 80 (d) 320
a and b are two numbers such that a exceeds 0.95b by x and b exceeds 0.95a by y. Then a + b =