O level mathematics percentages summary and Past paper questions
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Course
Mathematics
Institution
They are summary of percentages
Where you can find examples from past paper questions solved, as well as explanation for the equations+formulas used on percentages
FORMULAS
1) After selling price = ( 1 + % Profit gain) x Original value
buying price cost old value)
2) After selling price New value = ( 1 - % Loss) x Original
old buying price cost
3) % Profit = Profit
Original
Buying old or (cost before)
4) % Loss = Loss
Original
Cost
Old buying
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