Question

Набор фломастеров ,который стоил 160 рублей,продаётся с 25-процентной скидкой.При покупке трёх таких наборов покупатель отдал 500 рублей.Сколько рублей сдачи он должен получить? Объясните пожалуйста:)

Answer 1

160:100·25=40 рублей составляют 25% или скидка равна 40 рублям
160-40=120  рублей стоит набор
120·3=360 рублей стоят 3 набора
500-360=140 рублей сдача

Answer 2

Calculation of Change Given

To calculate the change that the buyer should receive, we need to determine the original price of the three sets of markers and subtract the amount paid by the buyer.

Given that the set of markers originally cost 160 rubles and was sold with a 25% discount, we can calculate the original price as follows:

Original price of one set of markers = 160 rubles / (1 - 0.25) = 160 rubles / 0.75 = 213.33 rubles.

Since the buyer purchased three sets of markers for a total of 500 rubles, we can calculate the change as follows:

Change = Amount paid - Total cost of three sets of markers = 500 rubles - (Original price of one set of markers * 3) = 500 rubles - (213.33 rubles * 3) = 500 rubles - 639.99 rubles = -139.99 rubles.

Therefore, the buyer should receive a change of -139.99 rubles. However, it's important to note that negative change indicates that the buyer still owes 139.99 rubles to the seller.

Please let me know if there's anything else I can help you with!