Question

A grapefruit is 8% heavier than an orange, and an apple is 10% lighter than the orange.

By what percentage is the grapefruit heavier than the apple?

Answer 1

a = 0.9 o
so,
o = a/0.9 = 1.111a
so, the orange is 11% heavier than the apple.

glad i could help(:

Answer 2

i think it is 20%