Question

You use 6

gallons of water on 20
plants in your garden. At that rate, how much water will it take to water 30
plants?

Answer 1

9 gallons of water
Divide the gallons by the number of plants.
6 ÷ 20 = 0.3
Multiply that by the number of plants you want.
0.3 x 30 = 9