exam Maths Puzzle Numerical Ability

1.) A company sells 375 scissors fo $562.50. Expenses total
$395.75. How much profit is made from each pair of scissos?

Thanks fo the help!!!

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exam Other Question

Find three consecutive odd integers such that twice the second is 5 more than the last ? Solve following systems of linear inequalities graphically

15x+20y<300
x+y<18

Don't understand this problem at all.