Classroom

In a classroom are 30 students, boys are four times more than girls. How many boys are in the class?

Correct answer:

x =  24

Step-by-step explanation:

x+y=30
x = 4y

x+y=30
x = 4•y

x+y = 30
x-4y = 0

x = 24
y = 6

Our linear equations calculator calculates it.

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