Question

Find out the profit percentage if the cost price of 10 pens equals to the selling price of 8 price.

Answer 1

Step-by-step explanation:

let the cost price (cp) of each pen be x

the cp of 8 pens is 8x

if the cp of 8 pen be 8x

then,

selling price (sp) of 10 pens be 10x

cp of 8 pens (8x) — sp of 10 pens (10x)

so the gain diffrence is

10x - 8x — 2x

gain%— gain × 100

CP

2x × 100

8x

2 × 100

8

100

4

25%

so the gain % is 25%

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