A man must mix some liquid fertilizer for his lawn. The instructions say to use 2 cups of chemical for every 1/2 gallon of water. How many cups of chemical will be needed for 13 gallons of water?

1 Answer
Dec 2, 2016

He must mix 52 cups of liquid fertilizer with the 13 gallons of water.


He needs 2 cups of fertilizer for every 1/2 gallon of water. It means that he must mix the fertilizer enough for

#13/{1/2} = 26# times this quantity.

Then, the amount of fertilizer must be 26 times bigger:

#26 times 2 = 52# cups of chemical product.