Магазин делает скидку пенсионерам на определенное кол. процентов от стоимости покупки . пакет сока стоит 70 р , а пенсионер заплатил 65р 10 копеек . сколько процентов состовляет скидка для пенсионера
The shop does a discount to pensioners on defined a stake. percent from purchase cost. The package of juice costs 70 р, and the pensioner paid 65р 10 kopeks. How many percent the discount for the pensioner makes
The shop does a discount to pensioners on defined a stake. percent from purchase cost. The package of juice costs 70 р, and the pensioner paid 65р 10 kopeks. How many percent the discount for the pensioner makes
70-65р10к=4р90к
70100%
4,90х% => х=4,90*100/70=7%
ответ:7%