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Question: Alfred can complete a job in 6 hours, but Borish takes 8 hours. They work together for 2 hours and Alfred leaves the job. The how much time will it take Borish to finish the job? Please explain the answer in brief

Posted by: Deepak S. Bhonsle on: 11 Aug, 2017
Bhibhuti Garg
Shivam Rathour
Drik Paul
Salman
Roshan Rawat
Anil Kumar Dhapwal
+ 4 Answers by Expert Tutors
Answer

if the work is 24

alfred in 1 hr does=4part

borish in 1hr does=3part

togather 1hr does=7part

in 2hr they does=14part

left=10

borish will take=10/3=3.33hr

Answer by:
Soumya, Howrah
Answer
(Alfred+Borish)'s 1 hr work = 1/6 +1/8=7/24. Work done by both = 2*(7/24)=7/12(they work for 2hrs). Work left= 1 - (7/12) = 5/12. This work is done by Borish alone. Time taken by Borish to finish the job = (5/12) * 8 = 10/3hours.
Answer by:
S Narayan, Hyderabad
Answer
Alfred+Borish)'s 1 hr work = 1/6 +1/8=7/24 Work done by both = 2*(7/24)=7/12(they work for 2hrs) Work left= 1 - 7/12 = 5/12 This work is done by Borish alone. Time taken by Borish to finish the job = (5/12) * 8 = 10/3hours
Answer by:
Anonymous
Answer
(Alfred+Borish)'s 1 hr work = 1/6 +1/8=7/24 Work done by both = 2*(7/24)=7/12(they work for 2hrs) Work left= 1 - 7/12 = 5/12 This work is done by Borish alone. Time taken by Borish to finish the job = (5/12) * 8 = 10/3hours
Answer by:
Sayani Pal, Kolkata
Answer
Work done by Alfred in 1 hour = 1/6 hour work done by Borish in 1 hour = 1/8 hour work done by both in 1 hour = 1/6 + 1/8 = 7/24 work done by both in 2 hours = (7/24)*2 = 14/24 = 7/12 remaining work = 1- (7/12) = 5/12 then time will be taken by Borish = (5/12)*8 = 10/3 hours = 3.3 hours
Answer by:
Anil Kumar Dhapwal, Pune
Answer
Alfred=6hrs Borish=8hrs Lcm=24 now Alfred=4 Borish=3 total(A+B)=7hrs A+B=2hrs so A*B=7*2=14 Borish's work=24-14=10 time taken by Borish=10/3=3.3hrs
Answer by:
Roshan Rawat, Hyderabad
Answer
A(Alfred)>-6hr ,B(Borish)>-8hr, Let total work=48 , A per hour work=8, B per hour work=6. For 1st 2 hour A+B=14(per hour)*2hr=28 Now remaing work=20 now time taken by B is= 20/6=3.33hr
Answer by:
Salman, Delhi
Answer
Alfred does (1/6) work in one hour and bourish does (1/8) work in one hour. so in two hours total work done = 2*(1/6+1/8)=7/12. work left=1-7/12= 5/12. one work is done in 8 hours so 5/12 work will be done in 8*(5/12)=(10/3)hours
Answer by:
Drik Paul, Kolkata
Answer
work done by alfred in 1 hour = 1/6 hour work done by borish in 1 hour = 1/8 hour work done by both in 1 hour = 1/6 + 1/8 = 7/24 work done by both in 2 hours = (7/24)*2 = 14/24 = 7/12 remaining work = 1- (7/12) = 5/12 then time taken by borish = (5/12)*8 = 10/3 hours = 3.3 hours
Answer by:
Shivam Rathour, Delhi
Answer
Alfred does (1/6) work in one hour and bourish does (1/8) work in one hour. so in two hours total work done = 2*(1/6+1/8)=7/12. work left=1-7/12= 5/12. one work is done in 8 hours so 5/12 work will be done in 8*(5/12)=(10/3)hours
Answer by:
Bhibhuti Garg, Ghaziabad

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