A can do a piece of work in 14 days and B is 40% more effective than A in how many days B can finish it.
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Step-by-step explanation:
40%=40/100=(20×2)/(20×5)=2/5
Therefore 40= 2 & 100= 5
If B is 40%more efficient than A
Consider A = 100 = 5 efficiency/day
B= 140 = (100+40) = 5+2 = 7 efficiency/day
A = 10 days
Total work =10×5=50
B can complete the same work in
Days = Total work/ efficiency/day
= 50/7 days
Thank you :)
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