Word Problem

Question

Pat and Mike working together can assemble a bookcase in 6 minutes. It takes Mike, working by himself, 9 minutes longer than it takes Pat working by himself to assemble the bookcase. How long does it take each, working alone, to do the job?

Answer 1

p represents Pat's time alone

p+9 represents Mike's time alone

 

6/p + 6/(p+5) = 1

 

Can you solve for p and answer?