Question

if x complete the task 3 minutes and complete to the same task in 5 minutes are we comparing the speed of X and Y

Answer 1

Yeah, in this situation you have to compare speed.

If you won't compare the speed, you can't determine who did the work fastest.

MArk Brainliest

Answer 2

Answer:

does 1/20 of the job for one minute, and B does 1/30.

1/20 +1/30=1/12

They do 1/12 of the job together for one minute.

So, they need twelve minutes to complete the job.