Question 744041
In terms of units:
( dollars / gallon ) x ( ( miles / day ) / ( miles / gallon ) ) x ( days )
After doing the division, you get:
( dollars / gallon ) x ( miles / day ) x ( gallons / mile ) x ( days )
Now I'll do a slight reordering:
( dollars / gallon ) x ( gallons / mile ) x ( miles / day ) x ( days )
Doing the cancellations, I get:
( dollars / mile ) x ( miles ) = dollars
Which is what you're after
Now, plugging in the numbers:
{{{ ( 3.35 )*( 40 / 25 )*5 = 3.35*8 }}}
{{{ 3.35*8 = 26.8 }}}
For a 5 day work week, $26.80 is spent