Rates, SM-Bank 028

John's old tractor used 8.3 litres of fuel per 100km.

His new tractor uses 5.9 litres of fuel per 100 km.

John pays $2.15 per litre for fuel and drives 20,000 km each year.

How much money will John save on fuel each year with his new tractor? (2 marks)

--- 6 WORK AREA LINES (style=lined) ---

Show Answers Only

$$1032$

Show Worked Solution

$\text{Fuel cost of old tractor}$

$=8.3\times $2.15\times \dfrac{20\ 000}{100}$

$=8.3\times $2.15\times 200$

$=$3569$

$\text{Fuel cost of new tractor}$

$=5.9\times $2.15\times\dfrac{20\ 000}{100}$

$=5.9\times $2.15\times 200$

$=$2537$

$\therefore\ \text{John’s fuel savings each year}$

$=$3569-$2537$

$=$1032$