Question

John needs 7 gallon bottles of water to fill 90water balloons how many gallon bottles of water does John need to purchase to fill up 140 water balloons

Answer 1

Answer:

11 bottles

Step-by-step explanation:

make a proportion because if you're using the same rate proportions can show that it's equal

$\frac{7}{90} = \frac{x}{140}$

cross multiply

$7 *140$$= 980$

divide the answer by 90 to find x

$980/90= 10.8$

round to 11 because you can't have 10.8 bottles