Answer
$d =8/hour$
Work Step by Step
We begin by forming the equation of the form:
$92=3d + 6d+ 20$
Join like terms together to get:
$92= 9d + 20$
Isolate the variable $d$ by subtracting $20$ from both sides of the equation as shown below:
$92 - 20 = 9d + 20 - 20$
Simplify to get:
$72 = 9d$
Divide through by the coefficient of the variable $d$ as shown:
$\frac{72}{9} = \frac{9}{9}d$
Simplify to get:
$8 = d$
Rearranging we have:
$d = 8$
