Question

9. If a radio is purchased for 690 and sold for 655.50, find the loss per cent.
detail answer.​

Answer 1

Loss percent = 5%

Step-by-step explanation:

GIVEN

Cost Price = ₹690

Selling Price = ₹655.50

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TO FIND

Loss Percent

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We know that,

Loss = Cost Price - Selling Price

Loss = 690 - 655.50

Loss = 34.5

Loss = ₹34.5

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We know that,

Loss Percent = Loss / Cost Price × 100

Loss percent = 34.5 / 690 × 100

Loss Percent = 0.05 × 100

Loss Percent = 5

Loss percent = 5%

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IMPORTANT

If the profit percent is given and we have to find the selling price

Then

Selling Price = ( 100 + Profit% ) × Cost Price / 100

If the loss percent is given and we have to find the selling price

Then

Selling Price = ( 100 - Loss% ) × Cost Price / 100

When selling price and loss percent is give and we have to find the cost price

Then

Cost Price = ( Selling Price × 100 ) / ( 100 - Loss Percent )

When selling price and profit percent is give and we have to find the cost price

Then

Cost Price = ( Selling Price × 100 ) / ( 100 + Profit Percent )

Answer 2

The loss IA 690-655.50 = 34.5

$\huge \bf \sf \green{EXPLANATION}$

$\implies \sf \: Loss\% = ( Loss*100/CP )$

$\implies \sf Loss\% = ( 34.5*100/690 )$

$\implies \sf Loss\% = 5\% \: \blue{ANSWER}$