SOLUTION: a class has 21 boys. the girls make up 2/5 of the class. how do i find the total number of pupils in the class
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Question 947756: a class has 21 boys. the girls make up 2/5 of the class. how do i find the total number of pupils in the class
Answer by MathLover1(20850) (Show Source): You can put this solution on YOUR website!
let the total number of pupils in the class be
if a class has boys,
and the girls make up of the class which means the girls make up , then
.........solve for
-the total number of pupils in the class
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