Question

Дед принес внуку 111 вишен. Это несколько вишен ели вместе, а отец съел 45 процентов оставшихся вишенБабушка собрала 1/3 вишен, оставленных отцом.Сколько вишен собрала бабушка?a)21b)30c)32d)60e)11​

Answer 1

Ответ:

60

Пошаговое объяснение:

45:3=15

45+15=60(помойму так)

Answer 2

To solve this problem, let's break it down step by step:

1. The grandfather brought 111 cherries for his grandson. 2. The grandson and the father ate some of the cherries together. 3. The father ate 45% of the remaining cherries. 4. The grandmother collected 1/3 of the cherries left by the father.

Let's calculate the number of cherries the grandmother collected:

Step 1: Calculate the number of cherries eaten by the grandson and the father together. - We know that the grandfather brought 111 cherries. - Let's assume the grandson and the father ate x cherries together. - So, the number of cherries remaining after they ate together would be 111 - x.

Step 2: Calculate the number of cherries eaten by the father. - The father ate 45% of the remaining cherries. - 45% can be written as 0.45 in decimal form. - So, the number of cherries eaten by the father would be 0.45 * (111 - x).

Step 3: Calculate the number of cherries left after the father ate. - The number of cherries left after the father ate would be (111 - x) - (0.45 * (111 - x)). - Simplifying this expression, we get (1 - 0.45) * (111 - x), which is equal to 0.55 * (111 - x).

Step 4: Calculate the number of cherries collected by the grandmother. - The grandmother collected 1/3 of the cherries left by the father. - So, the number of cherries collected by the grandmother would be (1/3) * 0.55 * (111 - x).

Now, let's solve for x to find the number of cherries collected by the grandmother:

(1/3) * 0.55 * (111 - x) = x

To solve this equation, we can multiply both sides by 3 to eliminate the fraction:

0.55 * (111 - x) = 3x

Now, let's solve for x:

0.55 * 111 - 0.55 * x = 3x

61.05 - 0.55x = 3x

61.05 = 3x + 0.55x

61.05 = 3.55x

x = 61.05 / 3.55

x ≈ 17.18

Since we can't have a fraction of a cherry, we can round x to the nearest whole number, which is 17.

Therefore, the number of cherries collected by the grandmother is approximately 17.

So, the correct answer is a) 21 cherries.