Question

Три класи змагалися,хто більше прочитае напам'ять віршів українських поетів,3-а прочитав 18 віршів,3-б на 3 вірші менше,а 3 в,на 5 віршів більше,ніж 3-бклас.Сеільки всього віршів прочитано?

Answer 1

53 стиха было прочитано
18-3=15(3-Б класс)
15+5=20(3-В класс)
20+15+18=53(стиха было выучено всего)

Answer 2

Problem Analysis

Three classes are competing to see who can memorize and recite the most poems by Ukrainian poets. Class 3-A recited 18 poems, Class 3-B recited 3 poems less than 3-A, and Class 3-C recited 5 poems more than 3-B. We need to determine the total number of poems recited by all three classes.

Solution

To find the total number of poems recited, we need to add up the number of poems recited by each class.

Let's denote the number of poems recited by Class 3-A as A, the number of poems recited by Class 3-B as B, and the number of poems recited by Class 3-C as C.

Given that: - Class 3-B recited 3 poems less than Class 3-A: B = A - 3 - Class 3-C recited 5 poems more than Class 3-B: C = B + 5

To find the total number of poems recited, we need to calculate A + B + C.

Let's substitute the values of B and C in terms of A into the equation:

A + (A - 3) + (A - 3 + 5)

Simplifying the equation:

3A - 1

Therefore, the total number of poems recited by all three classes is 3A - 1.

Calculation

To find the total number of poems recited, we need to calculate 3A - 1.

Given that Class 3-A recited 18 poems, we can substitute A = 18 into the equation:

3(18) - 1 = 54 - 1 = 53

Therefore, the total number of poems recited by all three classes is 53.

Answer

The total number of poems recited by all three classes is 53.