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The cost price of 12 pencils …

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The cost price of 12 pencils is equal to the selling price of 10pencils . find the profit percent.

Posted by Bharati Sahu 6 years ago

CBSE > Class 07 > Mathematics

1 answers

Gaurav Seth 6 years ago

Define x:

Let the cost price of 1 pencil = x

Find the selling price of 1 pencil:

Selling Price of 10 pencils = Cost of 12 pencils

Selling Price of 10 pencils = 12x

Selling Price of 1 pencil = 12x ÷ 10 = 1.2x

Find the gain:

Gain = 1.2x - x = 0.2x

Find the gain percentage:

Gain percentage = gain/cost price x 100

Gain percentage = (0.2x/x) x 100 = 20%

Answer: The profit is 20%

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CBSE > Class 07 > Mathematics