A person purchased 10 dozen pens at the rate of ₹ 4 per dozen. On checking, he found that 20 pens were not… · ABC26GN2617
Subject: General Aptitude · Chapter: Profit and Loss · Exam: P.C.S. 2008
A person purchased 10 dozen pens at the rate of ₹ 4 per dozen. On checking, he found that 20 pens were not working. In order to earn 25\% profit, he should sell the remaining pens each at
(a)40 paise
(b)44 paise
(c)50 paise
(d)55 paise
Answer
Answer (as printed): C
Explanation
Total C.P. of $(10 \times 12)$ i.e., 120 pens $=₹(4 \times 10)=₹ 40$. Number of working pens $=(120-20)=100$. Total S.P. of 100 pens $=₹\left(\frac{125}{100} \times 40\right)=₹ 50$. ∴ S.P. of each pen $=₹\left(\frac{50}{100}\right)=50$ paise.
Explanation as extracted from the printed page; notation may be imperfect.