Question

If there are 224 healthy boys in a school, and 26 unhealthy boys. Adding how many unhealthy boys , would the percentage of unhealthy boys be 20%?

Answer 1

Answer:

no percent of unheathy boys is 44.5 percent

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Step-by-step explanation:

Answer 2

The correct answer is 30.

Given: Number of unhealthy boys = 224.

Number of healthy boys = 26.

To Find: Adding how many unhealthy boys , would the percentage of unhealthy boys be 20%.

Solution:

Let the number of unhealthy boys added to make the percentage 20% = x.

Now, the number of unhealthy boys will become = 26+x

Total boys = healthy + unhealthy

Total boys = 224 + 26 + x = 250 + x

Percentage of unhealthy boys after adding = $\frac{unhealthy}{total}*100$

$\frac{26+x}{250+x} *100=20$

$\frac{26+x}{250+x} =\frac{20}{100}$

$\frac{26+x}{250+x} =\frac{1}{5}$

5(26 + x) = 250 + x

130 + 5x = 250 + x

4x = 120

x = 30

Hence, number of unhealthy boys added to make the percentage 20% is 30.

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