1 Answer | Add Yours
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.
We’ve answered 318,989 questions. We can answer yours, too.Ask a question