A is thrice good a workman as B and therefore is able to finish a job in 60 days less than B. Working together they can do it in?
A is thrice good a workman as B and therefore is able to finish a job in 60 days less than B. Working together they can do it in?
A).
20
B).
22 ½
C). 25
D).
30
1 answers
Answered by
Guest on
2021-07-12 07:21:32 | Votes
0 |
#
22 ½
Ratio of times by A and B= 1:3 difference of time is 2 days B takes 3 days if diff of time is 60 days B takes 3/2 *60 =90 days A’s 1day work is=1/30 B’s 1 day work =1/90 (A+B )’s one day
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