2 Найди число, \(\frac{4}{15}\) которого составляют 8, 32, 60, 240.

Решение:

Пусть число равно х, тогда:

\(\frac{4}{15}\)x = 8

x = 8 : \(\frac{4}{15}\)

x = \(\frac{8 * 15}{4}\)

x = 30

\(\frac{4}{15}\)x = 32

x = 32 : \(\frac{4}{15}\)

x = \(\frac{32 * 15}{4}\)

x = 120

\(\frac{4}{15}\)x = 60

x = 60 : \(\frac{4}{15}\)

x = \(\frac{60 * 15}{4}\)

x = 225

\(\frac{4}{15}\)x = 240

x = 240 : \(\frac{4}{15}\)

x = \(\frac{240 * 15}{4}\)

x = 900

Ответ: 30; 120; 225; 900.