1.Ram starts working on a job and works on it for 12 days and completes 40% of the work. To help him complete the work, he employs Ravi and together they work for another 12 days and the work gets completed. How much more efficient is Ram than Ravi?
A.50%
B.200%
C.125%
D.100%
Answers
Answered by
16
D)100 % is the right answer
as
time taken by ravi to compelete the work= (12/40)*100 =30 days
workin together they took = (12/60)*100 = 20 days
So let time taken by ravi to complete the entire work = x
so-
1/30+1/x = 1/20
then 1/x = 1/20-1/30=1/60
therefore,x=60
hence ram hase 100 % more efficiency
as
time taken by ravi to compelete the work= (12/40)*100 =30 days
workin together they took = (12/60)*100 = 20 days
So let time taken by ravi to complete the entire work = x
so-
1/30+1/x = 1/20
then 1/x = 1/20-1/30=1/60
therefore,x=60
hence ram hase 100 % more efficiency
Answered by
1
D)100 % is the right answer
as
time taken by ravi to compelete the work= (12/40)*100 =30 days
workin together they took = (12/60)*100 = 20 days
So let time taken by ravi to complete the entire work = x
so-
1/30+1/x = 1/20
then 1/x = 1/20-1/30=1/60
therefore,x=60
hence ram hase 100 % more efficiency
as
time taken by ravi to compelete the work= (12/40)*100 =30 days
workin together they took = (12/60)*100 = 20 days
So let time taken by ravi to complete the entire work = x
so-
1/30+1/x = 1/20
then 1/x = 1/20-1/30=1/60
therefore,x=60
hence ram hase 100 % more efficiency
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