Respuesta :
Answer:
Ms. Campbell= 24 hours
Ms. Dorsey = 4.8 hours
Step-by-step explanation:
Ms. Campbell paints 5x slower compared to Ms.Dorsey. Let's say Ms.Dorsey paint 5 meter square per hour, then Ms. Campbell paints 1 meter square per hour.
When they work together that means their work speed will be 5 +1 = 6 meter square per hour. If they work for 4 hours, then the room area will be: 4 hours * 6 meter square per hour = 24 meter square.
If Ms. Campbell paints the room alone, the time needed will be: 24 meter square / (1 meter square /hour) = 24 hours.
If Ms. Dorsey paints the room alone, the time needed will be: 24 meter square / (5 meter square /hour) = 4.8 hours.
