1.

In school 4/7 of the boys If there are 210 girls find the number of boys in the school

Answer» Substitute this value of x for 4x then we get 4*30 that is 120 therefore the no of boys is 120
Then we get tje value of x as 30
Then equate 7x equal to 210
Take the ratios as 4x and 7x


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