Solve the problem: The number a is 1/5 smaller than the number b .By how much is b bigger than a?

Answer 1

a = b - b/5 = 4b/5 a is 20% smaller than b, or 1/5 smaller

(4/5)b = a

b = (5/4)a b = a + (1/4)a b is 1/4 bigger than a, or 25% bigger