It will take 48 hours of work to complete the garden.The garden must be finished in 3 days.
Each gardener works for 8 hours per day.
How many gardeners are needed?
48 hours ÷ 3 days = 16 hours a day.
If a gardener works for 8 hours a day, 2 gardeners are needed each day.
The project is 3 days long so 2 x 3 = 6 gardeners, which is your answer :)