Q: If A, B, and C can complete a task in 20, 30, and 60 days respectively, and A is assisted by B and C every third day, how long will it take A to complete the task on their own
Answer:
Explanation:
The work rate of A is 1/20 of the task per day,
while the work rate of B and C together is 1/10 of the task per day.
When A is assisted by B and C every third day,
they can complete 1/5 of the task in 3 days.
Therefore, it will take A a total of 15 days to complete the task on their own.
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