Question

the ratio of red and green peppers in a ttuck is 3:4 . if the truck contains 120 green peppers ,how many red peppers are there?

Answer 1

r = red peppers

g = green peppers

The ratio of red and green peppers in a truck is 3:4 means:

r / g = 3 / 4

The truck contains 120 green peppers means:

g = 120

Put this value in ratio:

r / g = 3 / 4

r / 120 = 3 / 4

Multiply both sides by 120

r = 120 ∙ 3 / 4 = 360 / 4 = 90

90 red peppers

Proof:

r / g = 90 / 120 = 30 ∙ 3 / 30 ∙ 4 = 3 / 4

Answer 2

3:4 = 90:120