The number of boys and girls in a class are in ratio of 8:5, the number of boys is 9
more than the number of girls. What is total class strength?
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let, the no. of boys be 8x and girls be 5x.
therefore,
8x = 5x + 9
=> 8x-- 5x = 9
=> 3x = 9
=> x = 9 /3
=> x = 3
therefore, no. of boys is 8x=24
no. of girls is 5x = 15
therefore, total strength of the class = 24 + 18
= 52
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