The following question is taken from the December 2012 exam paper.
A truck delivered sand to two customers in a week. The following details are available.
Customer???????????????????????? Weight of goods delivered (kilograms)????????????????????????? 500 (kilograms)
X???????????????????????????????????????????????????? 500???????????????????????????????????????????????????????????????????????? 200
Y?????????????????????????????????????????????????? ?180?????????????????????????????????????????????????????????????????????????1,200
???????????????????????????????????????????????????????680????????????????????????????????????????????????????????????????????????1,400
The truck cost $3,060 to operate in the week. Each customer delivery was carried out separately, and the truck made no other deliveries in the week.What is the cost per kilogram/kilometre of sand delivered in the week (to the nearest $0.001)?