Question:
The ratio of the number of boys to the number of girls in Group A was 4 : 1.
The ratio of the number of boys to the number of girls in Group B was 2 : 3.
There were twice as many children in Group A as in Group B.
(a) What was the ratio of the number of boys in Group A to the number of boys in Group B?
(b) 10 boys and 10 girls left in Group B. The ratio of the number of boys in Group B to the number of girls in Group B became 1 : 2. How many children were there in Group A?
Solution:
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