SOLUTION: if 40% of the students in the class are boys and if there are 15 girls in the class then how many students are there in the class?

Question 257695: if 40% of the students in the class are boys and if there are 15 girls in the class then how many students are there in the class?
Found 2 solutions by ankor@dixie-net.com, unlockmath:
Answer by ankor@dixie-net.com(22740) (Show Source): You can put this solution on YOUR website!
if 40% of the students in the class are boys and if there are 15 girls in the class then how many students are there in the class?
:
Let x = no. of students in the class
:
x - .40x = 15
.6x = 15
x =
x = 25 in the class
Answer by unlockmath(1688) (Show Source): You can put this solution on YOUR website!
Hello,
Let's set up "x" as the total number of students. So now we can set up an equation:
40%x+15=x rewritten as:
.4x+15=x Subtract .4x from both sides will give us:
15=.6x Now divide each side by .6 to be:
25=x Therefore we know there are 25 students in the class.
Make sense?
RJ
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