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26.06.2021 •
Mathematics
In a class 3/5 of the pupils are boys. If there are 24 girls,how many boys are there in the class ?
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Ответ:
36 boys
Step-by-step explanation:
let x be the number of pupils in the class , then
3x + 120 = 5x ( subtract 3x from both sides )
120 = 2x ( divide both sides by 2 )
60 = x
Then
number of boys =
× 60 = 3 × 12 = 36
Ответ: