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archana singh
8y ago
A can do a certain job in 12 days.B is 60% more efficient than A. How many days does B alone take to do rhe same job?
11
Narender Reddy 8y ago
,
Narender Reddy 8y ago
7.5 days
Sumit Kumar 8y ago
60% means 3/5 ; if we consider 8 unit work then A do 3 unit, B do 5 unit. so in 12 days A can do 60 unit of work, and this 60 unit can be done by B in 60/8 days i.e 7.5 Days Answer.
Sumit Kumar 8y ago
it will be like, A=5 and B=8 unit per day.
KRITI SHUKLA 8y ago
7.5 days
Suman Rockz 8y ago
7(1/2 ) days
Shiv Shubham 8y ago
7.5
Noshin Mev 8y ago
if A suppose 100% efficient than definetly B will be 160% efficient
so if A takes 1/12 days to do a piece of work than B alone can do it in
(160/100)*1/12 days that means 8/5*1/12 = 2/15
hence B can do it in 15/2 days that is 7.5 days
Teju 6y ago
7 1/2
Ashutosh Hota 5y ago
7,5 days
arpita jena 5y ago
7.5 days
