Question
The number of boys to the number of girls in Primary 6 Goodness was 2 : 5. The number of boys to the number of girls in Primary 6 Faithfulness was 3 : 4. Both classes had the same number of boys. When 24 girls from Primary 6 Goodness joined Primary 6 Faithfulness, the ratio of the number of boys to the number of girls in Primary 6 Goodness became 2 : 3. Find the total enrolment of both classes.
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The number of boys to the number of girls in Primary 6 Goodness was 2 : 5. The number of boys to the number of girls in Primary 6 Faithfulness was 3 : 4. Both classes had the same number of boys. When 24 girls from Primary 6 Goodness joined Primary 6 Faithfulness, the ratio of the number of boys to the number of girls in Primary 6 Goodness became 2 : 3. Find the total enrolment of both classes.