It is given in the question that,

Cost price(purchasing price) of pair of shoes = Rs 800

Discount on marked price(MP) = 15%

Loss = 10%

Since there was a loss of 10% on selling the shoes and the cost price of the shoes was Rs 800, this means, selling price of the pair of shoes = 800 – (800*(10/100))

= Rs 720

Therefore the selling price of the pair of shoes was Rs 720.

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Now, let the marked price(MP) of the shoes be Rs’x’.

Then the selling price would have been = x-((x*15)/100)

= Rs 0.85*x————–equation (i)

and we already know that the selling price was Rs 720, therefore we can write,

0.85*x = 720

x = 720/0.85

x = Rs 847

Therefore the marked price of the pair of shoes was Rs 847.

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