Arun and Varun harvest a field in 6 hours ,Varun and Naveen harvest the same field in 8 hours while Arun and Naveen harvest in 12 hour.How long would they take working together to harvest the same field ?
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Varun and Arun can plough a field in 12 hours and 18 hours respectively.
:work done by Varun in 1 hour is equal to 1/12th part and work done by Arun in 1 hour is equal to 1/18th part
Varun 4 hour work is equal to 4multiply 1/12 =1/3.
remaining work is equal to 1 minus 1/3=2/3.
in one hour Arun ploughs 1/18 th part,of the field
=2/3÷1/18
=2/3 * 18
=12 days..
These are steps.....u can obtain ans by putting correct values...
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