Anonymous

# I need help with this math question?

The perimeter of a rectangle is 19cm. If the length is multiply by 4 and the width is multiply by 3, the perimeter becomes 62. What is the width of the rectangle?

### 2 Answers

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- Anonymous1 month ago
19 = 2w + 2L (or 2L = 19 - 2W)

and 62 = 6w + 8L Substitute for L

62 = 6w + 4 (19 - 2w)

62 = 6w + 76 - 8W

14 = 2w, W = 7 (Answer)

(orig rectangle is 2.5 long x 7 wide,

enlarged rectangle is 10 x 21)

- Donnie PorkoLv 71 month ago
Assuming that you mean 62 cm, the width is 7 cm.

2(7) + 2(2.5) = 19

2(3)(7) + 2(4)(2.5) = 62

You’re welcome.

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