Discussion
Rindia can do a job in 10 days. Rakesh can do the same job in 5 days. In how many days they can complite the job if they work together?
Answer: B
Rindia can do a job in 10 days.
So efficiency of Rindia = 100/10 = 10%
Similarly, Rakesh's efficiency = 100/5 = 20%
Combined efficiency of Rindia + Rakesh per day becomes = 20 + 10 = 30 %
Now, we have to find out the number of days taken by both Rindia and Rakesh to do 100% work,
Since they can do 30% work in 1 day,
So, they will 100% work in 100/30 = 3.33 days
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