The school choir has 84 members. The ratio of girls to boys in the color is 3: 4. How many members are girls?

1 answer:

7 0

3:4 of 84, means "3 fourth" of 84.

To calculate " 3 fourth" of 84:

i) we divide 84 by 4, that is 84/4=21,

ii) we multiply the result of the division by 3: 21*3=63

Answer: 63 members of the choir are girls.

Remark: whenever we want to find a/b or "something":

i) divide "something" by b
ii) multiply the result by a

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h (5) = 505.5 + 8 * exp (-0.9 * 5)
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