Question
The number of boys to the number of girls in Primary 2 Joy was 2 : 5. The number of boys to the number of girls in Primary 2 Goodness was 3 : 4. Both classes had the same number of boys. When 14 girls from Primary 2 Joy joined Primary 2 Goodness, the ratio of the number of boys to the number of girls in Primary 2 Joy became 3 : 4. Find the total enrolment of both classes.
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The number of boys to the number of girls in Primary 2 Joy was 2 : 5. The number of boys to the number of girls in Primary 2 Goodness was 3 : 4. Both classes had the same number of boys. When 14 girls from Primary 2 Joy joined Primary 2 Goodness, the ratio of the number of boys to the number of girls in Primary 2 Joy became 3 : 4. Find the total enrolment of both classes.