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9. Commercial arithmetic
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Q3 of 59 Page 9

By selling a watch for ₹ 720, Ravi loses 10%. At what price should he sell it, in order to gain 15%?

Let the CP of watch be x

SP of watch = ₹ 720


Loss = 10% of CP


Also, Loss = CP – SP


⇒ 10% of x = x – 720








CP of watch is Rs.800


Now for profit of 15%


Profit %




Profit = 120


SP of watch = CP + profit


= 800+120


= 920


∴ Ravi should sell watch at Rs.920 to gain 15%.


More from this chapter

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1

Sonu bought a bicycle for ₹ 3,750 and spent ₹ 250 on its repairs. He sold it for ₹ 4,400. Find his loss or profit percentage.

2

A shopkeeper purchases an article for ₹ 3,500 and pays transport charge of ₹ 100. He incurred a loss of 12% in selling this. Find the selling price of the article.

4

Hari bought two fans for ₹ 2,400 each. He sold one at a loss of 10% and the other at a profit of 15%. Find the selling price of each fan and find also the total profit or loss.

5

A storekeeper sells a book at 15% gain. Had he sold it for 18 more, he would have gained 18%. Find the cost price of the book.

Questions · 59
9. Commercial arithmetic
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