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Liquids in Liquids

The length of...

Question

The length of a rectangular notebook is 15 inches and the perimeter is 50 inches. Find the width (in inches).

A

8

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B

9

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C

10

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D

11

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Solution

The correct option is C
10

Perimeter of the rectangle = Sum of the lengths of its four sides.

50 =15 + 15 + y + y

50 =2(15 +y)

25 = (15 + y)

y = 10

So, the width of notebook is 10 inches.

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