The ratio of the number of girls to the number of boys in school A was 4:7. The ratio of the number of girls to the number of boys in school B was 3:8. The total number of pupils in school A was twice the total number of pupils in school B. Find the ratio of the number of boys in school A to the number of boys in school B. (Express your answer in its simplest form).
Solution
School A
Girls : Boys
4 : 7
(11 units total)
School B
Girls : Boys
3 : 8
(11 units total)
Since school A has twice the number of pupils as school B -----
School A
Girls : Boys
4 : 7
(11 units total)
Multiply by 2
School A
Girls : Boys
8 : 14
(22 units total)
Boys
School A : School B
14 : 8
7 : 4
Answer: The ratio is 7 : 4.
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