Question : Abraham can complete a work in 9 days, while Andrew can complete the same work in 6 days. In how many days can they complete the work if they work together?
Option 1: $2$
Option 2: $3 \frac{3}{5}$
Option 3: $2 \frac{3}{5}$
Option 4: $3$
Latest: SSC CGL preparation tips to crack the exam
Don't Miss: SSC CGL complete guide
Correct Answer: $3 \frac{3}{5}$
Solution :
Time taken by Abraham to complete work = 9 days
Time taken by Andrew to complete the same work = 6 days
Efficiency of Abraham = $\frac{1}9$
Efficiency of Andrew = $\frac{1}6$
$\therefore$ Efficiency if both worked together = $\frac{1}9+\frac{1}6
=\frac{5}{18}$
So, the total time taken = $\frac{18}5$.
Hence, the correct answer is $3\frac{3}{5}$.
Related Questions
Know More about
Staff Selection Commission Combined Grad ...
Answer Key | Eligibility | Application | Selection Process | Preparation Tips | Result | Admit Card
Get Updates BrochureYour Staff Selection Commission Combined Graduate Level Exam brochure has been successfully mailed to your registered email id “”.