Answer:
The time required by both persons to complete the work T = 1.458 hours
Step-by-step explanation:
Given data
Time required by Joe to clear a lot
= 2.5 hours
Time required by his partner to clear a lot
= 2.5 hours
Time required by both persons to complete the work by working together


T = 1.458 hours
Therefore the time required by both persons to complete the work T = 1.458 hours
The answer should match the image below.