Question

The number of swings in a children's park is increased from 25 to 40. What is the percentage of increase?
Pls Answer ​

Answer 1

Required Answer:

Given:

• Number is increased from 25 to 40.

To calculate:

• Percentage of increase

Calculation:

→ A percent change is an increase given as a percent of the original amount.

By using the formula:

• $\sf { \% \: increase = \Bigg ( \dfrac{Amount \: of \: increase}{Original\: amount} \times 100 \Bigg ) \% }$

Here,

• Amount of increase = 40 - 25 → 15

It means the number of swings in a children's park is increased by 15.

Also,

• Original amount = 25

Now, substituting all the values:

$\sf { \longrightarrow \% \: increase = \Bigg ( \dfrac{15}{25} \times 100 \Bigg ) \% }$

$\sf { \longrightarrow \% \: increase = ( 15 \times 4) \% }$

$\sf { \longrightarrow \% \: increase = 60 \% }$

Therefore, percentage of increase is 60%.

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Extra Information!

More important formulae:

● $\sf { \% \: increase = \Bigg ( \dfrac{Amount \: of \: increase}{Original\: amount} \times 100 \Bigg ) \%}$

● $\sf { \% \: decrease = \Bigg ( \dfrac{Amount \: of \: decrease}{Original\: amount} \times 100 \Bigg ) \%}$

● $\sf { \% \: error = \Bigg ( \dfrac{error}{actual \: value} \times 100 \Bigg ) \%}$

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