It takes 6 hours to clean a garden. In 2 hours 30 minutes, how much part of the garden can be cleaned?
Answer & explanation
Correct answer: option 2
If it takes 6 hours to complete the work,
Using unitary method,
Amount of work completed in 1 hour = $\frac{1}{6}$
Thus, amount of work completed in 2.5 hours = $\frac{1}{6}$ x 2.5 = $\frac{5}{12}$