Question

Rachel can finish the job in 5 hours, while Carl can finish the same job in 8 hours. How long will it take them to finish the job together?

Answer 1

3.07 hours?

Answer 2

1/5 + 1/8 = 1/x
x = 40/13
So, yes ... 3.0769

Answer 3

1/5+1/8 is equal to 1/x
so..
x=40/13
40/13 as a decimal is 3.0769
Answer: 3.0769
Enjoy!!

Answer 4

ur bad