# Calculate Loss and Loss Percent

We will learn how to calculate loss and loss percent.

If selling price is less than the cost price (S.P. < C.P.), there is a loss.

Loss = cost price - selling price

or, cost price = loss + selling price

Selling price = cost price - loss

Loss% → loss on $100 is called loss% Loss percent is always calculated on cost price So, loss% = $$\frac{loss}{cost price}$$ × 100 Solved Examples on Calculate Loss and Loss Percent: 1. A dress was bought for$400 and sold $350. Find the loss and loss percent. Solution: Cost price =$400

Selling price = $350 Since, S. P. < C. P., there is loss Therefore, loss = cost price - selling price =$450 - $350 =$50

So, loss% =  $$\frac{loss}{cost price}$$ × 100

=  $$\frac{50}{400}$$ × 100

=  $$\frac{25}{2}$$

= 12.5%

2. If the cost price of 20 electric goods is equal to the selling price of 25 electric goods, find loss per cent.

Solution:

Let cost price of 1 electric good = $1 Then cost price of 20 electric goods =$20

Also, cost price of 25 electric goods = $25 Since, selling price of 25 electric goods = cost price of 20 electric goods Therefore, selling price of 25 electric goods =$20

Therefore, loss = cost price - selling price

= $25 -$20

= \$5

Therefore, loss% = $$\frac{loss}{cost price}$$ × 100

=  $$\frac{5}{25}$$ × 100

= 20%

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