The journey is broken down into five segment
Shop - first delivery =

miles
First delivery - second delivery =

Second delivery - third delivery =

Third delivery - fourth delivery =

Fourth delivery - shop =

The average distance for each segment are:
![[12 \frac{1}{3}+8 \frac{3}{4}+17 \frac{2}{8}+23 \frac{2}{3}+10 \frac{5}{10} ]](https://tex.z-dn.net/?f=%5B12%20%5Cfrac%7B1%7D%7B3%7D%2B8%20%5Cfrac%7B3%7D%7B4%7D%2B17%20%5Cfrac%7B2%7D%7B8%7D%2B23%20%5Cfrac%7B2%7D%7B3%7D%2B10%20%5Cfrac%7B5%7D%7B10%7D%20%5D%20%20%20%20)
÷


÷5 =
Pay= hourly pay + tip= 23*2.22+(0.12)*465
that should help
During the sale,
$450 x (100% - 40%)
$450 x 60% = 450 x 0.6 = $270 = answer 1
After the sale,
$270 x 1.4 = $378 = answer 2