Subject: General Aptitude · Chapter: Time and Work · Exam: 2006 · Marks: · Difficulty:
Kamal can do a work in 15 days. Bimal is 50\% more efficient than Kamal. The number of days, Bimal will take to do the same piece of work, is
(a)$7 \frac{1}{2}$
(b)10
(c)12
(d)14
Answer
Answer (as printed): B
Explanation
Ratio of times taken by Kamal and Bimal = $150:100=3:2$. Suppose Bimal takes $x$ days to do the work. $3:2::15:x \Rightarrow x=\frac{2 \times 15}{3} \Rightarrow x=10$ days.
Explanation as extracted from the printed page; notation may be imperfect.