Ratios, math, Mathematics

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450 students. if there are 50 more boys than girls, how many boys and girls are there?

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Profit and loss, a shopkeeper buys two cameras at the same price . he sells...

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Graph ( x + 1)2 /9 -( y - 2)2/4 =1 of hyperbola, Graph  ( x + 1) 2 /9 -( ...

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