It takes about 6 people hours to cut the grass of a large property. Last week, 3 workers arrived at the property and cut the grass in 2 hours. This week, they scheduled 5 workers to cut the grass at the property. How long should the scheduler estimate it will take to cut the grass this week?
This is known as a "see-saw" problem
3 *2 = 5 * x where x is the time in hours for 5 people to cut the property
6 = 5 * x divide both sides by 5
6/5 = x
It will take 5 people 6/5 of an hour to cut the property = 1 + 1/5 hrs = = 1 hr 12 min