Question

Машинистка за первый день работы напечатала 3/8 всех страниц рукописи, за второй день 36% оставшегося числа страниц, после чего ей осталось напечатать ещё 72 страницы. Сколько страниц в рукописи?

Answer 1

Х - всего стр.
3/8х - в 1 день.
х - 3/8х = 5/8х - осталось.
5/8х * 0,36 = 0,225х - во 2 день.
72 - в 3 день

х - 3/8х - 0,225х = 72
х - 0,375х - 0,225х = 72
0,4х = 72
х = 72: 0,4
х = 180 стр - в книге.

Answer 2

This is a math problem that requires solving a system of equations. Here is how I would approach it:

- Let x be the total number of pages in the manuscript. - The typist printed 3/8 of all pages in the first day, so she printed 3/8 x pages. - The remaining number of pages after the first day is x - 3/8 x = 5/8 x. - The typist printed 36% of the remaining number of pages in the second day, so she printed 0.36 * 5/8 x = 0.225 x pages. - The remaining number of pages after the second day is 5/8 x - 0.225 x = 0.375 x. - The typist had to print 72 more pages in the third day, so we have the equation 0.375 x = 72. - Solving for x, we get x = 72 / 0.375 = 192.

Therefore, the total number of pages in the manuscript is 192.

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