Question

Решите задачу НЕ вычисляя: На праздник подготовили 21 коробку конфет по 15 штук в каждой. Можно ли распределить эти конфеты на пять групп ребят?

Answer 1

Можно, пот. что 15 - число кратное 5.
Если 15 умножить на 21, то получится число, кратное пяти.(число,которое делится на 5 без остатка).

Answer 2

Problem Analysis

We are given 21 boxes of candies, with each box containing 15 candies. The task is to determine if it is possible to distribute these candies among five groups of children.

Solution

To solve this problem, we need to check if the total number of candies (21 boxes * 15 candies per box) is divisible by the number of groups (5). If the total number of candies is evenly divisible by 5, then it is possible to distribute the candies equally among the groups. Otherwise, it is not possible.

Let's calculate the total number of candies and check if it is divisible by 5.

Calculation

The total number of candies is calculated by multiplying the number of boxes (21) by the number of candies per box (15):

Total number of candies = 21 boxes * 15 candies per box

Total number of candies = 315 candies

Answer

The total number of candies is 315. Since 315 is divisible by 5, it is possible to distribute these candies equally among five groups of children.

Yes, it is possible to distribute the 315 candies among five groups of children.