i'm pretty sure it would take 20 hours because it's half the men so you multiply the number of hours it takes by 2
Another question on Mathematics
Mathematics, 21.06.2019 12:30
Eric drew a scale drawing of a country park. the scale he used was 1 inch = 2.5 yards. the picnic area is 80 yards wide in real life. how wide is the picnic area in the drawing ?