Question

20 кольорових оливцив розклали в 5 коробок. Скидки оливцив ще треба купити, щоб вийшло 7 коробок, а в кожний коробцi було на 3 олiвцi бiльше?

Answer 1

1) 20 : 5 = 4 (оливцив) було в одной коробке
2) 4 + 3 = 7 (оливцив) стало в одной коробке
3) 7 * 7 = 49 (оливцев) нужно для семи коробок
Ответ: 49 оливцив  треба купити для 7-и коробок

Answer 2

According to one of the web search results, the translation from Ukrainian to English of your text is:

Answer in detail. 20 colored pencils are divided into 5 boxes. How many more pencils do you need to buy to make 7 boxes, and each box has 3 more pencils?

This is a math problem that can be solved by using algebra or graphs. One way to solve it is to let x be the number of pencils you need to buy, and y be the number of pencils in each box. Then you can write two equations based on the given information:

5y = 20 (the total number of pencils in 5 boxes is 20) 7y = x + 27 (the total number of pencils in 7 boxes is x plus 27, because each box has 3 more pencils than before)

Solving for x and y, you get:

y = 4 (each box has 4 pencils initially) x = 21 (you need to buy 21 more pencils)

Therefore, the answer is 21. You can check your answer by plugging in the values of x and y into the equations and see if they are true.