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 [tex]T_1[/tex] = 2.5 hours
Time required by his partner to clear a lot [tex]T_2[/tex] = 2.5 hours
Time required by both persons to complete the work by working together
[tex]T = \frac{T_1 T_2}{T_1 + T_2}[/tex]
[tex]T = \frac{(2.5)(3.5)}{2.5 + 3.5}[/tex]
T = 1.458 hours
Therefore the time required by both persons to complete the work T = 1.458 hours
