A complete 75% of a work in 45 days and b is 25% moire efficient than a. A and b working togtether will complete whole work in how many days?
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Answer:
26.67 Days
Step-by-step explanation:
Let say work = 1
75 % of work = (75/100) * 1 = 3/4
3/4 is done by A in 45 day
1 is done by A in = 45/(3/4) = 60 Days
Work done by A in 1 Day = 1/60
B is 25 % More efficient than A
so work done by B in 1 day = Work done by A + (25/100)*(workdone by A)
= 1/60 + (25/100)(1/60)
= 1/60 + 1/240
= (4 + 1)/240
= 5/240
= 1/48
A + B 's 1 day work = 1/60 + 1/48
= (4 + 5 )/240
= 9/240
A& B will complete the work in 240/9 days
= 26.67 Days
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