Question

Josh can split a truckload of logs in 8 hours, but working with his dad, they can get it done in 3 hours. How long would it take josh's dad working alone to split the logs?

Answer 1

Answer: 4.8 hrs

Step-by-step explanation:

Josh: $\frac{1}{8}$

Dad: $\frac{1}{x}$

Together: $\frac{1}{3}$

Josh + Dad = Together

$\frac{1}{8}$ + $\frac{1}{x}$ = $\frac{1}{3}$

$\frac{1}{8}*(24x)$ + $\frac{1}{x}*(24x)$ = $\frac{1}{3}$(24x)

 3x + 24 = 8x

-3x           -3x

         24 = 5x

        ÷5     ÷5  

        4.8 = x