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Primary 6 Problem Sums/Word Problems - Try FREE
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- Attempt Mode: Attempt Single Question
John can erect a 100-metre fence in 2 hours.
Tom can erect a 100-metre fence in 4 hours.
Dominic can erect a 100-metre fence in 5 hours.
If all of them work together, how long will it take them to erect a 100-metre fence?
Note to students:
If your answer to the above is a mixed number, give your answer as a b/c