How to calculate selling price using cost and loss percent?

We know, selling price = cost price - loss

selling price = cost price - loss% × cost price/100

selling price = 100 × cost price - loss% × cost price/100

selling price = (100 - loss%)cost price/100, [Here, cost price and loss% are known.]

Solved examples will help us to find selling price when the cost price and loss% are known:

**1.** Shelly bought a dress for $150 and sold it to Jenny there by suffering a loss of 10%. Find the selling price of the dress.

**Solution: **

Given cost price = $150

Loss% = 10%

We know, selling price = (100 - loss%)cost price/100

= (100 - 10)150/100

= 90 × 150/100

= 9 × 15

= $135

Therefore, selling price of the dress is $135.

**2.** Mike bought a laptop
for $800 and sold it to Jack there by suffering a loss of 12%. Find the selling
price of the laptop.

**Solution: **

Given cost price = $800

Loss% = 12%

We know, selling price = (100 - loss%)cost price/100

= (100 - 12)800/100

= 88 × 800/100

= 88 × 8

= $724

Therefore, selling price of the laptop is $724.

**3.** By selling a chair
for $372, Daisy loses 7%. At what price must she sell it to gain 10%.

**Solution:**

Given selling price = $ 372

Loss % = 7%

We know, cost price = selling price × 100/100 - loss%

Therefore, cost price = 372 × 100/100 - 7

= 372 × 100/93

= $400

Now cost price = $400

Gain% = 10%

Therefore, selling price = (100 + gain%)cost price/100

= (100 + 10)400/100

= 110 × 4

= $440**7th Grade Math Problems****From Calculate Selling Price using Cost and Loss Percent to HOME PAGE**

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