Mike Long

Jason can sweep the floor warehouse in 2 hours. Mike can do the same job in 3 hours. How long will it take Jason and Mike together to sweep the floor?

Answer: 1 hr 12 min

Explanation-
At 2:00 Jason does Upstairs
1.2 = 1, then make a half of the stage in one hour

3:00 Mike does in the floor
01/03 = 3, then do third speech in an hour


Together, Jason and Mike 1 hour - 1 / 2 +1 / 3 = 5 / 6 speech
Then, five sixths of the word, they do in one hour
The whole floor is done in 1 / (5 / 6) hours = 6 / 5 h = 1 h 12 min

Well, the answer is simple, really. If you remember, if you half each time, you get one hour for Jason and Mike for 1 1 / 2 hours. Then you take the time and take into account the fact that they will do the same amount of work. Thus, you get 1 1 / 2 hours.

1 hour 12 min, the pickup time comes to Jason, he will have two thirds of the world is before it needs to complete.

Jason rate: J = 1 job / 2:00
Mike rate: M = 1 job / 3:00
Working together: D + M = 1 / 2 + 1 / 3
Jobs = 3 / 6 h + 2 jobs / 6:00
= 5 jobs / 6:00

1 x Job (6:00 / 5 jobs) = 1.2 h
= 1 hr 12 min

Jason and Mike can sweep the ground in one hour and 12 minutes.

At 2:00 Jason does Upstairs
In 1 h Jason does half of the floor

Similarly,
1 hr Mike does third speech

So, all in one hour only Jason and Mike, 1 / 2 +1 / 3 = 5 / 6 speech
Then, five sixths of the word, they do in one hour
The ground of all or part of a speech is done
1 / (5 / 6) hours = 6 / 5 h = 1 h 12 min