1. from 14 book to 40 books.
2. from 72 points to 50 points.

find the percent increase or decrease to the nearest percent.

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Ответ:

Elephants12

27.07.2022

Mathematics

You can set up a ratio:
$\frac{object weight on A}{object weight on B} = \frac{elephant weight on A}{elephant weight on B}$
By substituting in the numbers, you get:
$\frac{100}{3} = \frac{2900}{x}$
$(\frac{100}{3}) * x = (\frac{2900}{x}) * x$
$\frac{100x}{3} = 2900 \\ (\frac{100x}{3}) * 3 = 2900 * 3$
100x = 8700
100x / 100 = 8700 / 100
x = 87 pounds

Hope this helps! :)

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1. from 14 book to 40 books. 2. from 72 points to 50 points. find the percent increase or decrease to the nearest percent.