Question

If the selling price of 10 pens is equal to cost price of 14 pens, find the gain percent.

Answer 1

Answer:

$40\%$

Step-by-step explanation:

Solution:

Given that, Selling price of 10 pens = cost price of 14 pens

So, let the cost price of 1 pen be Rs x

Selling price of 10 pens = Rs 14x

Selling price of 1 pen =Rs 14x/10

By using the formula,

Gain = selling price – cost price

= 14x/10 – x

= 4x/10

By using the formula,

Gain % = (gain/cost price) × 100

= (4x/10)/x × 100

= 2/5 × 100

= 40%

Answer 2

By using the formula,

Gain = selling price – cost price

= 14x/10 – x

= 4x/10

By using the formula,

Gain % = (gain/cost price) × 100

= (4x/10)/x × 100

= 2/5 × 100

= 40%

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