One person can do a certain job in ten minutes, and another person can do the same job in fifteen minutes. how many minutes will they take to do the job together?
if x represents how many minutes to do the job together, then how much of the job does the slowest person do?

They will take 6 minutes to do the job together.

Slowest person do 2/5 of the total work.

Step-by-step explanation:

Given,

Time taken by first person = 10 minutes,

⇒ One day work of the first person = ,

While, time taken by second person = 15 minutes,

⇒ One day work of second person = ,

So, when both persons work together, total one day work =  ,

Thus, the total time taken by the both persons when they work together,

x = = 6 minutes

The one who takes more time is slower.

Now, the part of the work done by the slowest person ( second one),

is this a multiple choice question?

if so it's a and c