SOLUTION: Answer this math question "in a class the ratio of the number of boys to the number of the girls is 5:6, if there are 20 boys in the class, how many pupils are in the class?

Algebra ->  Percentage-and-ratio-word-problems -> SOLUTION: Answer this math question "in a class the ratio of the number of boys to the number of the girls is 5:6, if there are 20 boys in the class, how many pupils are in the class?      Log On


   

Question 832361: Answer this math question "in a class the ratio of the number of boys to the number of the girls is 5:6, if there are 20 boys in the class, how many pupils are in the class?
Answer by josmiceli(19441) About Me  (Show Source):
You can put this solution on YOUR website!
+b%2Fg+=+5%2F6+
Multiply both sides by +6g+
+6b+=+5g+
You are given that:
+b+=+20+, so
+6%2A20+=+5g+
+120+=+5g+
+g+=+24+
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The class is
+b+%2B+g+=+20+%2B+24+
+b+%2B+g+=+44+
There are 44 pupils