Question

В начале учебного года в школе было 540 учащихся, а к концу года их стало 648. На сколько процентов увеличилось за учебный год число учащихся?

Answer 1

На 50 % наверное
не смогла написать решение

Answer 2

540:100= 5.4 это 1 % в начале года
648:5.4=120 это сколько процентов стало в конце года
120-100=20
Ответ: на 20 %

Answer 3

Calculation of Percentage Increase in Number of Students

To calculate the percentage increase in the number of students from the beginning of the school year to the end of the year, we can use the following formula:

Percentage Increase = ((Final Value - Initial Value) / Initial Value) * 100

Given that there were 540 students at the beginning of the school year and 648 students at the end of the year, we can substitute these values into the formula:

Percentage Increase = ((648 - 540) / 540) * 100

Calculating this expression, we find that the percentage increase in the number of students for the school year is approximately 20%.

Please note that the above calculation assumes that there were no other changes in the number of students during the school year.