janeriaw188
13.10.2019 •
Mathematics
The ratio of boys to girls in year 8 is 5: 6
if there are 72 girls in year 8, what is the total number of students is the year level?
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Ответ:
132
Step-by-step explanation:
We can use proportions to solve this. Set up as follows, with boy stuff on top and girl stuff on bottom. We are looking for the number of boys when the number of girls is 72:
Cross multiply to get 6x = 360
and x = 60.
When there are 72 girls, there are 60 boys and
72 + 60 = 132 students total.
Ответ:
THIS IS MATHEMATICS DELETE THIS QUESTION PLEASE THIS IS OFF TOPIC