Question

Помогите решить задачу ! В двух киосках имеются тетради , причём в одном 250 штук . Когда из этого киоска передали в другой 30% числа тетрадей , то во втором стало тетрадей в 1 1/7 раза больше , чем осталось в первом . Сколько тетрадей было первоначально во втором киоске ?

Answer 1

Решение: остальные 1400 тетрадей сост-ют 7% (100-40-25-28).
Пусть всего тетрадей было "х" штук, тогда:
0,07х=1400; х=20000
1-ый день: 20000*40/100=8000
дальше сами

Answer 2

Solving the problem step-by-step:

The question states that in the first kiosk there were originally 250 notebooks. From this kiosk, 30% of the notebooks were transferred to the second kiosk. To calculate 30% of 250: `0.3 * 250 = 75` So 75 notebooks were transferred from the first to the second kiosk. That means in the first kiosk there were originally 250 notebooks and now there are 250 - 75 = 175 notebooks left. It also states that after the transfer, the second kiosk had notebooks in "1 1/7 times as many" as what was left in the first kiosk. 1 1/7 times 175 is: `175 * (1 + 1/7) = 175 * 1.142857... = 200` So the number of notebooks in the second kiosk after the transfer must have been 200. Working backwards, if 75 notebooks were added to the original amount in the second kiosk, and the total became 200 notebooks, then the original amount in the second kiosk must have been 200 - 75 = 125 notebooks.

Therefore, the original number of notebooks in the second kiosk was 125.