4/5 of a class is girls and there are 8 boys. How many total in class.

Question

Mathematics

Chloe Brandt

3 January, 12:22

4/5 of a class is girls and there are 8 boys. How many total in class.

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Answers (1)

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Rufio · Answer 1

40

Step-by-step explanation:

a+b=c

a=girls

b = boys

c = total

the statement tell us:

4/5 of a class is girls:

a = (4/5) * c

boys=b=8

c=a+b

so we have:

c = (4/5) * c + 8

c - (4/5) * c=8

(5c-4c) / 5 = 8

c/5=8

c=8*5

c=40

total=40