Two workers can paint 800 meters of trim in 5 hours. How many meters of trim can be painted by 4 workers in 2 hours?

Question

Two workers can paint 800 meters of trim in 5 hours. How many meters of trim can be painted by 4 workers in 2 hours?

Answer 1

Ten man-hours (2 · 5) paints 800 meters

One man hour paints 80 meters

Eight man-hours (4 · 2) paints 640 (8 · 80) meters

 

Four men can paint 640 meters in two hours.

Answer 2

So 4 workers can paint 1600 meters in 5 hours.

As for in 2 hours, 1600/5*2 = 640 meters.

 

OR:

Two workers can paint 800 meters of trim in 5 hours, so one worker can paint 400 meters in 5 hours, and one worker can paint 80 meters in one hour.

 

So 4 workers can paint 320 meters in one hour, and 640 meters in 2 hours.