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The cost of two books being sold differs by $8. What should be the rate of discount in...
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The cost of two books differs by $8. If one of the books costs X the other costs X + 8.
Let an equal rate of discount of D% be applied to the price of both the books, their price is `(1 - D/100)*X` and `(1 - D/100)(X + 8)`
`(1 - D/100)(X + 8) - (1 - D/100)*X = 3 `
The equation derived above is one with two variables, D and X. This cannot be solved for D.
The discount that needs to be applied is dependent on the initial price of the books and changes accordingly.
Posted by justaguide on September 11, 2013 at 6:28 PM (Answer #1)
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