Answer: they need 13.86 minutes to chop 14 pounds of carrots.
Step-by-step explanation:
Rohan can chop 6 pounds of carrots in 11 minutes, then he can chop:
6lb/11min = 0.55 pounds per minute.
Lewis can chop 6 pounds in 13 minutes, then he can chop:
6lb/13min = 0.46 pounds per minute.
Working together, they can chop:
0.55 lb/min + 0.46lb/min = 1.01 lb/min
So working together, they can chop 1.01 pounds per minute.
Now we want to answer:
how many minutes will it take for Rohan and Lewis to chop 14 pounds of carrots?
If they need a time T, we will have the equation:
(1.01 lb/min)*T = 14 lb
T = 14lb/(1.01 lb/min) = 13.86 min
This means that they need 13.86 minutes to chop 14 pounds of carrots.
