Question

Last year, Tony used 12.8 gallons of water to fill up his pool. This year, he brought a larger pool and predicts he will need 253% more water. How much water does he predict he will need next year?

Answer 1

32.384 gallons

Explanation

we can easily solve this by using a rule of three.

Step 1

a) let x represents the amount of water he will need ( gallons), used last year si 100%

$\begin{gathered} if\text{ } \\ 12.8\text{ }\Rightarrow\text{ 100 \%} \\ then \\ x\Rightarrow253\text{ \%} \end{gathered}$

now, we can set a proportion

$\frac{12.8}{100}=\frac{x}{253}$

b) finally, solve for x

$\begin{gathered} \frac{12.8}{100}=\frac{x}{253} \\ Multiply\text{ both sides by 253} \\ \frac{12.8}{100}*253=\frac{x}{253}*253 \\ 32.384=x \end{gathered}$

therefore, He will need 32.384 gallons

I hope this helps you