Problema Solution
Working together, it takes two computers 5 minutes to send out a company’s email. If it takes the slower computer 15 minutes to do the job on its own, how long will it take the faster computer to do the job on its own?
Answer provided by our tutors
Let the time taken by faster computer be x
so here ,
1/15 + 1/x = 1/5
=> 1/ x = 1/5 - 1/15
=> 1/x = 2/15
=> x = 15/2 = 7.5 minutes ANS