Answer:
1.2 hours
Step-by-step explanation:
Given the following :
Time taken by Adam to shovel driveway = 2 hours
Time taken by BEV to shovel highway = 3 hours
How long will it take them working together
Hence Adam's rate of shoveling per hour :
Reciprocal of time taken = 1/2 per hour
BEV's rate will also be ;
1/ 3 per hour
If both work together ; that is combining the rate :
1/2 + 1/3 = (3 + 2) = 5/6
Combined rate = 5/6
Total fraction of shoveled area = 1:
Time taken = area / rate
= 1 ÷ (5/6)
= 1 × (6 / 5)
= 6/5
= 1 1/5 hours = 1.2 hours
