profit and loss

By selling 55 m of thread the shopkeeper gains the selling price of 22m. Find the gain percentage?








Answer:

Selling price of a meter of thread = y
so, selling price of 55m = 55y
and selling price of 22m = 22y
gain made by the shopkeeper on selling 55m of thread = 22y
cost price of 55m = 55y -22y = 33y
gain % = (gain/Cost price) x 100 = (22y/33y) x 100 = 66.67%