Question

Задача на деление в данном отношении : оператор набирал рукопись на компьютере три дня. в первый день он набрал 30% всей рукописи . отношение количества страниц, набранных в третий день равны 5 : 2. воаторой день оператор набрал на 27 стр > чем в 3ий день .Сколько всего стр в рукописи

Answer 1

5-2=3 части -разница частей
27:3=9 стр одна часть
9*5=45 стр во второй день
2*9=18 стр в третий
45+18=63 стр вместе 2день+3 день
100-30=70% составляют 63 страницы
63:70*100=90 стр в рукописи

Answer 2

Problem Analysis

We are given the following information: - The operator typed the manuscript on the computer for three days. - On the first day, the operator typed 30% of the entire manuscript. - The ratio of the number of pages typed on the third day to the number of pages typed on the second day is 5:2. - The operator typed 27 more pages on the second day than on the third day.

We need to find the total number of pages in the manuscript.

Solution

Let's assume the total number of pages in the manuscript is x.

According to the given information: - On the first day, the operator typed 30% of the manuscript, which is equal to 0.3x pages. - The ratio of the number of pages typed on the third day to the number of pages typed on the second day is 5:2. Let's assume the number of pages typed on the third day is y and the number of pages typed on the second day is z. Therefore, we can write the equation: y/z = 5/2. - The operator typed 27 more pages on the second day than on the third day. So, we can write the equation: z = y + 27.

To solve this problem, we need to find the values of x, y, and z.

Solution Steps:

1. Let's solve the equation y/z = 5/2 for y in terms of z: - Multiply both sides of the equation by z: y = (5/2)z. 2. Substitute the value of y in terms of z into the equation z = y + 27: - z = (5/2)z + 27. - Multiply both sides of the equation by 2 to eliminate the fraction: 2z = 5z + 54. - Subtract 5z from both sides of the equation: -3z = 54. - Divide both sides of the equation by -3: z = -18. - Therefore, the number of pages typed on the second day, z, is -18. 3. Substitute the value of z into the equation z = y + 27 to find y: - -18 = y + 27. - Subtract 27 from both sides of the equation: -45 = y. - Therefore, the number of pages typed on the third day, y, is -45. 4. Substitute the values of y and z into the equation y/z = 5/2 to find x: - (-45)/(-18) = 5/2. - Simplify both sides of the equation: 5/2 = 5/2. - Therefore, the equation is true for any value of x.

Since the equation is true for any value of x, we cannot determine the total number of pages in the manuscript based on the given information.

Please note that the given information may be incomplete or contradictory, leading to an indeterminate solution.

Let me know if you need help with anything else.