# The efficiency of Rahul is 20% more than Ravi. Rahul and Ravi together

| The efficiency of Rahul is 20% more than Ravi. Rahul and Ravi together start a work but after some time , Ravi left the work . Rahul complete the remaining work in next 6 days . Find in how many days total work be finished , If Ravi can do the whole work in 16 days.

A. 4

B. 6

C. 10

D. 12

### Right Answer is: C

#### SOLUTION

20% =

Let efficiency of Ravi = 5 unit

So efficiency of Rahul = 6 unit

Work = efficiency × number of days

Let Rahul and Ravi work together for x days .

According to question

Efficiency of ravi × 16 = {(efficiency of Ravi + efficiency of Rahul) × } + efficiency of Rahul × 6

⇒

⇒

⇒ x = 4

So total number of days = 4+ 6 = 10

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The efficiency of Rahul is 20% more than Ravi. Rahul and Ravi together