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Area of Rectangle

If a 10 feet ...

Question

If a 10 feet rope weighs 2 pounds, what is the weight of a 20 feet rope?

A

2 lbs

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B

4 lbs

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C

8 lbs

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D

6 lbs

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Solution

The correct option is B 4 lbs
10 feet rope weighs 2 lbs
$\frac{10}{2}$ = $\frac{20}{z}$
z $\times$ 10 = 2 $\times$ 20
z = 4 lbs (divide by 10 on both sides)

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