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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

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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:

[tex]\frac{4.5}{3}=\frac{x}{7}[/tex]

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

[tex]\begin{gathered} x=\frac{4.5}{3}\cdot7 \\ \\ x=10.5\approx11\text{ gallons} \end{gathered}[/tex]

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

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