In a class, the number of boys is more than the number of girls by 12%. Find the ratio of number of boys to the number of girls.

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Solution

Let the number of boys and girls be x and y respectively.
Then (x-y) = 12% of (x+y)
or x-y = 3/25 (x+y)
25x-25y=3x+3y or
22x = 28y
or x/y=28/22=>14/11=>14:11
number of boys to girls is 14:11

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In a class, the number of boys is more than the number of girls by 12%. Find the ratio of number of boys to the number of girls.

Let the number of boys and girls be x and y respectively. Then (x-y) = 12% of (x+y) or x-y = 3/25 (x+y) 25x-25y=3x+3y or 22x = 28y or x/y=28/22=>14/11=>14:11 number of boys to girls is 14:11

Let the number of boys and girls be x and y respectively.
Then (x-y) = 12% of (x+y)
or x-y = 3/25 (x+y)
25x-25y=3x+3y or
22x = 28y
or x/y=28/22=>14/11=>14:11
number of boys to girls is 14:11