Question

В некоторой школе из 170 получивших за первую четверть по математике пятерки 102 девочки. Найдите долю получивших за первую четверть пятерки мальчиков в этой школе.

Answer 1

Можно дать ответ в виде десятичной дроби: 0,4.

Answer 2

102/170 = 0,6
0,6 * 100 = 60% - доля девочек
100 - 60 = 40%
Ответ: 40% доля мальчиков

Answer 3

Calculation of the Fraction of Boys who Received Fives in Mathematics

To find the fraction of boys who received fives in mathematics in the school, we need to know the total number of students who received fives and the number of girls who received fives.

According to the given information, there are 170 students who received fives in the first quarter of mathematics. Out of these, 102 are girls.

To find the number of boys who received fives, we can subtract the number of girls from the total number of students who received fives:

Number of boys who received fives = Total number of students who received fives - Number of girls who received fives

Number of boys who received fives = 170 - 102 = 68

Therefore, there are 68 boys who received fives in mathematics in this school.

To calculate the fraction of boys who received fives, we divide the number of boys who received fives by the total number of students who received fives:

Fraction of boys who received fives = Number of boys who received fives / Total number of students who received fives

Fraction of boys who received fives = 68 / 170

Simplifying the fraction, we get:

Fraction of boys who received fives = 0.4

Therefore, the fraction of boys who received fives in mathematics in this school is 0.4 or 40%.

Please note that the search results did not provide specific information about the number of boys who received fives in this particular school. However, we were able to calculate the fraction based on the given information.