Correct Answer - Option 4 : 120 days
Given:
Ravi and Kamal together can complete the task in = 60 days
Kamal left the work after = 46 days
The whole task completes in = 66 days
Formula used:
Work = Time × efficiency
Calculation:
Ravi and Kamal both work together = 46 days
⇒ The remaining task of Kamal of 14 days, completed by Ravi in = 66- 60= 6 days
⇒ The efficiency ratio ok Kamal & Ravi = 6/14= 3/7
⇒ Total task= (3 + 7) × 60 = 600
⇒ 60% of Total task = 360
⇒ Time taken by Kamal alone to complete the 60% of whole task = 360/3 = 120 days
∴ Kamal can complete the 60% of whole task in 120 days.
