the ratio of boys to girls in a class is 7:5 . there are 36 students in the class. how many students are boys
Mathematics · Middle School · Tue Nov 03 2020
Answered on
Given the statement:
The ratio of boys to girls in a class is 7:5
Determine the number of boys if there are 36 students in class
Solution:
If the total number is 36, then we can divide it into 12 groups whereas each group contains 7 boys and 5 girls.
7 + 5 = 12
Now since the total number is 36, we divide it by 12, which means there are 3 groups in total. To find for the number of boys and the number of girls, we simply need to multiply 3 with 7 and then 5.
Number of boys = (3)(7)
Number of boys = 21
Number of girls = (3)(5)
Number of girls = 15
Final answer:
Number of boys = 21