Question

11. If the price of dia
el is raised by 20% today, by what percent it should be redus
tomorrow to bring it to the previous level?​

Answer 1

as the same percentage it is rise up

Answer 2

Step-by-step explanation:

Let the price today be 100

increased by 20%

so tomorrow's price=

$(100 \times 20\%) + 100 \\ = (100 \times \frac{20}{100}) + 100 \\ = 120$

let, percentage by which it should be reduced to get 100 again=x

$120 - x\% \times 120 = 100 \\ 20 = \frac{x}{100} \times 120 \\ x = 16.67\%$