6. Meena, Reena and Anjum can complete a piece of work by themselves in 8 hours, 10 hours and 12 how respectively. They all start the work together but after 3 hours Meena and Anjurn leave. How long will Reena take to complete the remaining work?
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Answer:
7 hours
Step-by-step explanation:
Reena had done work of 3 hours she had remaining work of 7 hours.
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