Ali can do a work in 12 hours. yaima can do the same work in 15 hrs and lala in 20 hours.if they start working together at 9 am.when willthe work be finish
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Time taken by Ali to complete the work = 12 hours
Time taken by Yaima to complete the work = 15 hours
Time taken by Lala to complete the work = 20 hours
Amount of work Ali can do in an hour = 1/12 work
Amount of work Yaima can do in an hour = 1/15 work
Amount of work Lala can do in an hour = 1/20 work
When they all work together , work done in an hour = 1/12 + 1/15 + 1/20
= 5/60 + 4/60 + 3/60
= 12/60
= 1/5 work
they all can together do 1/5 work in an hour so they can complete the whole work in 5 hours altogether !!!
when they start the work at 9am they can complete the work in 5 hours so they will complete the work at 2pm
HOPE IT HELPS !!!
PLEASE MARK MY ANSWER AS BRAINLIEST !!!
Time taken by Yaima to complete the work = 15 hours
Time taken by Lala to complete the work = 20 hours
Amount of work Ali can do in an hour = 1/12 work
Amount of work Yaima can do in an hour = 1/15 work
Amount of work Lala can do in an hour = 1/20 work
When they all work together , work done in an hour = 1/12 + 1/15 + 1/20
= 5/60 + 4/60 + 3/60
= 12/60
= 1/5 work
they all can together do 1/5 work in an hour so they can complete the whole work in 5 hours altogether !!!
when they start the work at 9am they can complete the work in 5 hours so they will complete the work at 2pm
HOPE IT HELPS !!!
PLEASE MARK MY ANSWER AS BRAINLIEST !!!
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