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marshall27 [118]

3 years ago

8

In a square, one pair of opposite sides was made 50% longer and the other pair of opposite sides was made 50% shorter.

1 answer:

Pachacha [2.7K]3 years ago

8 0

You have a square with an area of 100 meters^2.
if you decrees a pair of opposite sides by 50%. you end up with a rectangle with the area of 50 meters^2.
then you increase the other pair of opposite sides by 50%. you end up with a rectangle with the area of 75 meters^2. OK now I see what I did wrong.

The correct answer is 75%

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Firstly, we have t = 2 hour and r = 40 mph, so we find k:

$t=\frac{k}{r}\\2=\frac{k}{40}\\k=2*40\\k=80$

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