in a class of 30 pupils, the ratio of the number of boys to the number of girls is 2:3. how many boys should be added to the class to make an equal numbers of boys and girls?
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Answer:
6 boys should be added to the class...
Step-by-step explanation:
let no of boys and girls be 2x and 3x
2x+3x=30
5x=30
x= 30/5
x=6
no of boys = 2x = 2×6 = 12
no of girls = 3x = 3×6 = 18
so 6 boys should be added to the class
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