By selling 2 dozen ball pens, a shopkeeper earned the profit equal to the selling price of 10 ball pens. Find his profit percent.
Answer & explanation
Correct answer: option 2
ATQ,
⇒ S.P. - C.P. = Profit
⇒ 24 S.P. - 24 C.P. = 10 S.P.
⇒ 14 S.P. = 24 C.P.
⇒ S.P. : C.P. = 12 : 7
⇒ Profit = 5R
⇒ Profit % = \(\frac{5}{7}\) × 100 = 71\(\frac{3}{7}\)