Question

Joanna works in a marina. Boat servicing costs $70.00, plus $4.50 for each litre of oil. Joanna serviced a boat and made out a bill for $88.00. How many litres of oil did she use?(use equations)

Answer 1

$88.00 minus $70.00 base fee is $18.00 then you divide that by $4.50.
The answer is 4 liters.