A can do job in 4 days and B can do the same job in 6 days. how long it will take A&B work together to do the same job.
Answers
Answer:
Step-by-step explanation:
Naive mathematics will tell you (4/2) + (5/2) = 4,5 days.
Project management will tell you 4 + 5 = 9 days billed, but you only pay the labourers for 1 day each, and give the project manager a bonus.
Cynicism will tell you they will get in each others way, and the job will never be finished, and you’ll have to employ C to do the job after settling with A and B for two days’ work each.
Experience will tell you something different, depending on the job, and, of course, your experience.
Optimism will tell you that ‘many hands make light work’, and they will only take 1,5 days.
Software engineering will tell you that they won’t finish, but they’ll get bored after two days and give up, so only pay them for 2 days and finish it yourself.
The devil really is in the detail.
Answer
Total days = 5days
Step-by-step explanation:
A completes total work in 4days
B completes total work in 6days
So,
if both works together both will do half amount of
work i.e. A will do 1/2 of work and B will do 1/2 of work
A = 1/2 × 4 = 2days
B = 1/2 × 6 = 3days
Total days = 2 + 3 = 5days