A pair of shoes has been marked up by 65%. If the original price was $40.00, what is the new price?

First we need to see how many times 65% will make the price go up by 100%. We can see this by dividing 100 by 65. 100 divided by 65 is 1.53846153846. Now we can multiply 40 by 1.53846153846 and see what we get. 40x1.53846153846=$61.5384615384.

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Step-by-step explanation:

or

step-by-step explanation:

we need to solve for 'x' the following equation:  

we have that:

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⇒ ⇒

factorizing, we get that:

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then, the solutions are: or

nothing extraneous has been found!