Question

Question 134 of 190FINAL- MathematicsIf it takes 4.5 gallons of paint to paint 3 rooms, how many whole gallons of paint will you have to buy to paint 7 rooms?DO NOT

Answer 1

ANSWER:

11 gallons

STEP-BY-STEP EXPLANATION:

We can calculate the amount of gallons to be able to whistle 7 rooms by means of the following proportion:

$\frac{4.5}{3}=\frac{x}{7}$

Let x be the number of gallons needed, we solve for x:

$\begin{gathered} x=\frac{4.5}{3}\cdot7 \\ \\ x=10.5\approx11\text{ gallons} \end{gathered}$

Since they must be whole gallons, it takes 11 gallons to paint 7 rooms.