Billy tells his sister Sarah that he is twice as old and twice as smart as her right now. Sarah says that in five years should be twice as old as she is now and that Billy won’t be. How old will they be in five years?

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she is currently 5 billy is  10

she says that in 5 years she will be double her age so this gives us the hint that she is 5 currently

she will turn 10 and billy will turn 15 which means that he will not be double her age

36 girls

step-by-step explanation:

the 48 boys is 4 parts of the ratio

divide 48 by 4 to obtain one part of the ratio

= 12 ← 1 part of the ratio

3 parts = 3 × 12 = 36 ← number of girls

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step-by-step explanation: