Question

В корзине были яблоки. Сначала в корзину положили еще 15 яблок, а затем взяли 1/7 получившихся яблок. Сколько было яблок в корзине первоначально, если из корзины взяли 20 яблок

Answer 1

20 это 1/7, значит надо взять 7 раз по 20 чтобы узнать, сколько яблок было всего
120*7=140 всего

Из них 15 доложенных
То есть 140-15=125 было изначально

Answer 2

Было - х яблок;
взяли - (х+15)/7=20
х+15=140
х=140-15=125 яблок было.

Answer 3

Problem Analysis

We need to determine the initial number of apples in the basket given that 15 apples were added to the basket and then 20 apples were taken out, which constituted 1/7 of the total number of apples.

Solution

Let's assume the initial number of apples in the basket is x.

According to the problem, 15 apples were added to the basket, so the total number of apples becomes x + 15.

Then, 1/7 of the total number of apples were taken out, which is equal to 20 apples. This can be represented as:

(1/7) * (x + 15) = 20

To find the initial number of apples, we can solve this equation.

Calculation

Let's solve the equation to find the value of x.

(1/7) * (x + 15) = 20

Multiplying both sides of the equation by 7 to eliminate the fraction:

x + 15 = 140

Subtracting 15 from both sides of the equation:

x = 140 - 15

x = 125

Answer

The initial number of apples in the basket was 125.

Verification

Let's verify our answer using the equation:

(1/7) * (x + 15) = 20

Substituting the value of x = 125:

(1/7) * (125 + 15) = 20

Simplifying the equation:

(1/7) * 140 = 20

20 = 20

The equation holds true, which verifies that our answer is correct.