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 because if you divide 6 by 2 you get 3 and if per 10 plants you have to use 3 gallons then for 30 you'll have to use nine because 3x3 equals 9

Answer 2

9 because every ten plants is equal to 3 gallons. 30 plants are equal to 9 gallons.
tell me if if helps.