Question

Помогите пожалуйста с задачей .В пачке 250 листов бумаги.На распечатку одной рукописи ушло 60% пачки, на перепечатывание другой рукописи 3/4 от остатка.Сколько осталось чистых листов бумаги.Ответ должен быть 25 листов , но я не знаю как получить .

Answer 1

250:100*60=150 это 60%
250-150=100 осталось после 1 рукописи
100:4*3=75 ушло на 2 рукопись
150+75=225 листов всего потратили
250-225=25 чистых листов осталось

Answer 2

250=100проц
2.5=1проц
2.5*60=150
250-150=100
100/4=25
25*3=75
100-75=25

Answer 3

Problem Analysis

To solve this problem, we need to calculate the number of clean sheets of paper left after printing and reprinting two manuscripts. We are given that 60% of the pack of 250 sheets is used for printing one manuscript, and then 3/4 of the remaining sheets are used for reprinting another manuscript. We need to find the number of clean sheets remaining.

Solution

Let's break down the problem step by step:

1. Calculate the number of sheets used for printing the first manuscript: - 60% of the pack of 250 sheets is used for printing the first manuscript. - 60% of 250 = 0.6 * 250 = 150 sheets.

2. Calculate the number of sheets remaining after printing the first manuscript: - Subtract the number of sheets used for printing the first manuscript from the total number of sheets in the pack. - 250 - 150 = 100 sheets.

3. Calculate the number of sheets used for reprinting the second manuscript: - 3/4 of the remaining sheets are used for reprinting the second manuscript. - 3/4 * 100 = 75 sheets.

4. Calculate the number of clean sheets remaining: - Subtract the number of sheets used for reprinting the second manuscript from the number of sheets remaining after printing the first manuscript. - 100 - 75 = 25 sheets.

Therefore, there are 25 clean sheets of paper left.

I hope this helps! Let me know if you have any further questions.