Problema Solution
Anna can finish a job in 6 hours more than Vince can. Together, they can finish a job in 12 hours. How long will each of them can take?
Answer provided by our tutors
let 'x' represent how long Vince takes, then 'x+6' represents how long Anna takes, then if they finish the job together in 12 hours:
1/12 = 1/x + 1/(x+6)
solving for 'x' we have a positive value of x=21.37
It takes Vince approximately 21.4 hours alone and Anna 27.4 hours