Concept:Convert miles to kilometres using the given relation 1 kilometre =85 mile.Explanation:From 1 km =85 mile, we get 1 mile =58 km.Multiply the given distance by this conversion factor:240 miles =240×58 km.Simplify: 5240=48, so 240×58=48×8=384.Hence, 240 miles equals 384 kilometres.