Question

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

Answer 1

The grapefruit is 20% heavier than the apple

Explanation:

Say the orange's weight is o.

Grapefruit = 1.08o

Apple = 0.9o

So to find the percentage the grapefruit is bigger, you have to first do 1.08 - 0.9 = 0.18

0.18 / 0.9 = 0.2

0.2 = 20%

Answer 2

i'm pretty sure the grapefruit is 20% more

Sorry if i'm wrong

Have an amazing day :)