Problema Solution
It takes stefan 16 hours to clean an attic, jose can clean the same attic in 9 hours. If they worked together how long would it take them?
Answer provided by our tutors
let
x = the time (in hours) that Jose and Stefan need to clean the attic together, x>0
1/x attic per hour is the together rate
1/16 attic per hour is Stefan's rate
1/9 attic per hour is Jose's rate
1/16 + 1/9 = 1/x
by solving we find:
x = 5.76 hr
click here to see the step by step solution of the equation:
it will take them 5.76 hours to clean the attic together.