Mathematics · Time and Work
X and Y can complete a task together in 15 days, while Y and Z can finish it in 20 days. After X works on it for 6 days and Y for 10 days, Z takes 16 days to finish the remaining work. How many days would it take for Z to complete the work alone?
- 125 days
- 235 days
- 340 days✓
- 430 days
Correct answer
40 days
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