Question

the cost price of 5 pencils is equal to the selling price of 4 pencils find the gain percent

Answer 1

very easy buddy
cp×5= sp×4
where, cp- cost price
sp- selling price
CP/sp = 4/5
so here above⬆ gain
formula of gain%
gain%= 100×1 /4
25 % is correct answer

Answer 2

The gain percentage is 25%.

• The cost price of 5 pencils is equal to selling price of 4 pencils.
• Let the cost price of 5 pencils be x.
• Therefore the selling price of 4 pencils will be x.
• Now cost price of 1 pencil = x/5.
• Selling price of 1 pencil = x/4
• Profit on 1 pencil = x/4-x/5 = x/20
• Profit on 5 pencils will be x/20×5 = x/4
• Now profit percentage = $\frac{Profit}{Cost \ price}$ × 100

Profit percentage = $\frac{x/4}{x}$ × 100

Profit percentage = $\frac{1}{4}$ × 100 = 25%