Question

Цены на яблоки сначала выросли на 60% а затем понизились на 20% .Сколько изначально стоили яблоки если после понижением цен они стояли 128 руб.

Answer 1

1) 100-20=80%- составляют 128р. 2) пропорция: 128-80% х-100% х= 128*100:80=160р до понижения. 3) 100+60=160% составляют 160р 4) пропорция: 160-160% х-100%. Х=160*100:160=100р- изначальная цена

Answer 2

Calculation of the Initial Price of Apples

To calculate the initial price of apples, we need to consider that the prices first increased by 60% and then decreased by 20%. Let's assume the initial price of apples is x.

The price of apples initially increased by 60%, which can be represented as:

x + 0.6x = 1.6x

After the increase, the price of apples decreased by 20%, which can be represented as:

1.6x - 0.2(1.6x) = 1.6x - 0.32x = 1.28x

Given that the final price of apples is 128 rubles, we can set up the equation:

1.28x = 128

Solving for x:

x = 128 / 1.28 = 100

Therefore, the initial price of apples was 100 rubles.