Asked by Festus
The ratio of boys and girls in a class is 3:4. When three boys are absent the ratio changes to 5:8. How many pupils are in the class altogether?
Answers
Answered by
Steve
b/g = 3/4
(b-3)/g = 5/8
b+g = 42
(b-3)/g = 5/8
b+g = 42
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