A lorry can travel 35 miles per litre of diesel that costs £7.30 per litre. What is the cost in £ (to the nearest 2 decimal places) of the diesel used in driving the lorry 200 miles?

Firstly, we want to start off by calculating how many litres of diesel the lorry uses when it drives for 200 miles. We know that with 1 litre of diesel, the lorry can drive for 35 miles. Knowing this, we can divide the total number of miles travelled (200) by 35 to get the total number of litres of diesel used for this journey (i.e. how many times 35 can go into 200). 200/35 = 5.7142857… Next, in the question, we are told that each litre of diesel costs £7.30, so now we need to multiply the number of litres used for this journey by 7.30 to get the total cost of driving the lorry 200 miles.5.7142857 x 7.3 = 41.7142857 = £41.71 (2dp)