Question

Ціна на планшет знизили на 5 відсотків. На скільки відсотків треба підвищити нову ціну, щоб отримати початкову？

Answer 1

Пусть 1 цена Пусть х % (1-1/20)*(1+x/100)=1
(20/20-1/20)*(1+x/100)=1
19/20*(1+x/100)=1
19/20*1/1+19/20*x/100=1
19/20+19x/2000=20/20
19x/2000=20/20-19/20
19x/2000=1/20
19x/2000=0.05
19x=0.05*2000
19x=100
x=100/19
x=5 5/19
Ответ: 5 5/19 %

Answer 2

Calculating the Price Increase

To calculate the percentage increase needed to restore the original price after a 5% reduction, we can use the following formula:

New Price = Original Price - (Original Price * Reduction Percentage)

To find the percentage increase needed to restore the original price, we can use the following formula:

Percentage Increase = (Reduction Amount / (Original Price - Reduction Amount)) * 100

Calculation

Using the provided information, we can calculate the percentage increase needed to restore the original price after a 5% reduction.

Given: - Reduction Percentage: 5%

Using the formula: Percentage Increase = (5 / (100 - 5)) * 100

Percentage Increase = (5 / 95) * 100

Percentage Increase ≈ 5.26%

Therefore, the new price needs to be increased by approximately 5.26% to restore the original price.