If 40% of the students in a school are boys and the number of girls is 858 how many boys are there?
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no. of boys =40%
no. of girls =60%
no. of girls =858
no. of boys =?
60% = 858
40% =?
suppose 40% = x boys
(cross multiply)
60 × x =40 × 858
60 × x / 40 × 858
x = 4 × 143 = 572
no. of girls =60%
no. of girls =858
no. of boys =?
60% = 858
40% =?
suppose 40% = x boys
(cross multiply)
60 × x =40 × 858
60 × x / 40 × 858
x = 4 × 143 = 572
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