A truck delivered sand to two customers in a week. The following details are available. Customer X Y Weight of goods delivered (kilograms) 500 180 680 Distance covered (kilometres) 200 1,200 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)?
1) 0.003
2) 0.010
3) 2.186
4) 4.500
