In class of 40 pupils the number of girls is three-fifths of the number of boys. Find the
number of boys in the class.
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Let x be the number of boys
Then number of girls is 3x/5
3x/5 + x = 40
(3x + 5x) /5 = 40
8x/5 = 40
8x = 5×40
x = 25
3x/5 = 15
Hence the number of boys is 25 and the number of girls is 15.
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Step-by-step explanation:
Number of pulps =40. no of girls. =3/5. no of boys. =40-3/5
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