Well that could have been a little more tactful.

I'm confused by this as well.

4,000 skateboards per day / 200 skateboards per hour = 20 working hours

That still seems a bit high. To check my work,

4,000 skateboards per day / 20 working hours = 200 skateboards per hour

200 skateboards per hour / 60 minutes per hour = 3 1/3 skateboards per minute

Even at 20 working hours, they are still producing over three skateboards per minute. So at what point (how many working hours) do they produce equal to or less than three skateboards per minute? (Note that the 200 skateboards per hour rule must be disobeyed to calculate this.)

4,000 skateboards per day / 21 working hours = 190.47619047619 skateboards per hour / 60 = 3.1746031746 skateboards per minute. Nope!

4,000 skateboards per day / 22 working hours = 181.81818181818 skateboards per hour / 60 = 3.0303030303. Pretty close to 3!

4,000 skateboards per day / 23 working hours = 173.91304347826 skateboards per hour / 60 = 2.89855072464. Bingo!

Or, to be exact,

3 skateboards per minute * 60 = 180 skateboards per hour

4,0000 skateboards per day / 180 skateboards per hour = 22.22 (repeating 2) working hours per day!

**They would have to work over 22 hours a day for them to produce 4,000 skateboards per day at three skateboards per minute.**
This doesn't add up!

Click to expand...