Question

В первых классах школы учатся 150 ребят, а в десятых-75 .Во сколько раз число первоклассников больше числа десятиклассников? На сколько процентов число первоклассников больше числа десятиклассников?

Answer 1

150/75=2  - в 2 раза первоклассников больше, чем десятиклассников
150/75*100%=200%  -первоклассников
200%-100%=100%
ответ: в 2 раза, на 100%

Answer 2

Calculation of the Ratio and Percentage Difference

To calculate the ratio of the number of first-graders to tenth-graders, we can use the following formula:

Ratio = (Number of first-graders) / (Number of tenth-graders)

Let's calculate the ratio and then find the percentage difference.

Calculation

Given: Number of first-graders = 150 Number of tenth-graders = 75

Ratio = 150 / 75 = 2

This means that the number of first-graders is 2 times the number of tenth-graders.

Percentage Difference

To find the percentage difference, we can use the following formula:

Percentage Difference = ((Number of first-graders - Number of tenth-graders) / Number of tenth-graders) * 100%

Substituting the given values: Percentage Difference = ((150 - 75) / 75) * 100% = (75 / 75) * 100% = 100%

This means that the number of first-graders is 100% more than the number of tenth-graders.