Problema Solution
working alone it took beth 11 hours to clean an attic. pam can clean the same attic in 15 hours. how long should it take them working together?
Answer provided by our tutors
let 'x' represent the hours Beth and Pam need to clean the attic together
their together rate is: 1/x attic per hour
Beth's rate is: 1/11 attic per hour
Pam's rate is: 1/15 attic per hour
1/11 + 1/15 = 1/x
by solving we find:
x = 6.35 hr
click here to see the step by step solution of the equation:
it will take them approximately 6.35 hours to clean the attic together.