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What would the answer to this be?

Show working out please I want to check if what I did was correct.

What would the answer to this be? Show working out please I want to check if what-example-1
User Troyal
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2 Answers

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total is 25
boys : girls
2 : 3
2+3=5
25/5=5
5*3=15
15 boys



User Wouch
by
7.6k points
1 vote
STEPS:

1) set up an equation. use x as a variable

2x + 3x = 25

2) solve the equation for x:

5x = 25
x = 5


3) Now that you know the value of x, substitute it into the expression for how any girls there are, which is "3x" (since the ratio of BOYS to GIRLS is 2:3):

3x
= 3(5)
= 15


So 15 is your answer, and there are 15 girls in the class.
User Jenya Kirmiza
by
7.8k points

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