Correct Answer - Option 4 : 21%
Formula used:
Profit = SP – CP
Profit % = Profit/CP × 100
Here, CP and SP are cost price and selling price respectively
Calculation:
CP of 11 m cloth = 100
CP of 1 m cloth = 100/11
And, SP of 10 m cloth = 110
SP of 1 m cloth = 110/10 = 11
Profit = SP of 1 m cloth – CP of 1 m cloth
⇒ 11 – 100/11
⇒ (121 – 100)/11
⇒ 21/11
Profit % = [(21/11)/(100/11)] × 100
⇒ 21%
∴ The profit percentage is 21%