Let the height of the Kiwi be 'x'
'4 times the height of a kiwi' = 4x
'20 inches taller than 4 times the height of a kiwi' = 4x + 20
An ostrich is 108 inches tall and this is EQUAL to 4x + 20
108 = 4x + 20
108 - 20 = 4x
88 = 4x
88 ÷ 4 = x
x = 22
The height of the kiwi is 22 inches
