A house is purchased in 1990 and sold in 2002 for a profit of $45 000. If the ratio of cost price to profit is 21:5, find: A) the cost price B) the selling price C) the ratio of cost price to selling price

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A= We place the profit, 45000 under the 5, since they are both profits. 21 : 5                 45000.   Then we cross multiply, We multiply 45000 by 21 and wwe divide it with the 5. [latex] \frac{21 multiply 45000}{5}[/latex]  And you will get the answer $189000

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