Question

a number is increased by 20% and then it is decreased by 10% find the net increase or decrease percent​

Answer 1

Answer:

8% increase

Step-by-step explanation:

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Let the number be 100.

After 20% increment , 120.

After 10% decrement , 120-12 = 108

So, net increase = [(108-100)/100]*100

= 8%

Answer 2

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Let the Number be 100.

$\large\implies \bold{100 \times 120\% \times 90\%}$

$\large\implies \bold{100 \times \frac{120}{100} \times \frac{90}{100} }$

$\large\implies \bold{12 \times 9}$

$\blue{\large\implies \bold{108}}$

$\blacksquare$ Increase % = 108 - 100

$\large\blacksquare$ Increase % = 8%

$\huge{\red{\ddot{\smile}}}$