$1 is equivalent to 100 cents so $12.50 is equivalent to 100*12.50 = <<12.50*100=1250>>1250 cents
He bought 25 oranges for 1250 cents so each orange cost 1250/25 = <<1250/25=50>>50 cents each
If he sells each orange for 60 cents, he is making a profit of 60-50 = <<60-50=10>>10 cents on each one.
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