A takes 20 days to complete a job x. b takes 30 days to complete the same job x. how many days will it take a and b when they work together to complete the job x?
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Answered by
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In 1 day :
part of work A can complete=1/20
part of work B can complete=1/30
Therefore,
if they work together in 1 day part of work they can complete=1/20 + 1/30
=3+2/60
=5/60
=1/12
So total no.of days they will take to complete the work together=12
part of work A can complete=1/20
part of work B can complete=1/30
Therefore,
if they work together in 1 day part of work they can complete=1/20 + 1/30
=3+2/60
=5/60
=1/12
So total no.of days they will take to complete the work together=12
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Answered by
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capacity of A is=1/20
b=1/30
total capacity =1/20+1/30=3/60+2/60=5/60=1/12
thus total days = reciprocal of total capacity
=12 days
b=1/30
total capacity =1/20+1/30=3/60+2/60=5/60=1/12
thus total days = reciprocal of total capacity
=12 days
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