Selling

Algebra Level 2

The selling price of 15 items equals the cost of 20 items. What is the percentage profit earned by the seller?

33.3 25 20 15 40

Mamun Abdullah by Mamun Abdullah , 32, Bangladesh

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2 solutions

Chew-Seong Cheong
Sep 27, 2015

Let the selling price be p p and cost be c c . Then, 15 p = 20 c ⇒ p = 20 15 c = 4 3 c 15p=20c \quad \Rightarrow p =\dfrac{20}{15}c = \dfrac{4}{3}c . Therefore,

Profit = p − c c = 4 3 c − c c = 1 3 ≈ 33.3 = \dfrac{p-c}{c} = \dfrac{\frac{4}{3}c - c}{c} = \dfrac{1}{3} \approx \boxed{33.3} %

3 Helpful 0 Interesting 0 Brilliant 0 Confused
Mamun Abdullah
Sep 12, 2015

1 Helpful 0 Interesting 0 Brilliant 0 Confused

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