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Oksanka [162]
3 years ago
9

Find each percent increase round to the nearest percent from 86 books to 150 books

Mathematics
1 answer:
Stels [109]3 years ago
3 0
From 86 books to 150 books. An increase of 64 books.

(150 - 86) / 86 = 64 / 86 = 0.744 * 100% = 74.40% or 74% increase

150 / 86 = 1.744 * 100% = 174.40%

86 is the basis. It is 100%

If the problem asks for the value of the percentage increase and the rate is given 74.4% of 86. Then 86 * 74.4% = 64. You just add 64 to 86 to get the new total of books which is 150.
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Step-by-step explanation:

Proportion states that the two fractions or ratios are equal.

As per the given statement:

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By definition of proportion;

\frac{\text{Height of a cell tower}}{\text{Shadow of a cell tower}} = \frac{\text{Height of a pole}}{\text{Shadow of a pole}}

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5 0
3 years ago
A culture of 100,000 bacteria triples every hour. How many bacteria were there 3 hours ago? (easy steps please)​
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