In November, Hilary drove 580 miles in her car. The car travelled 33.5 miles for each gallon of petrol used. Petrol cost 1.09 per litre. 1 gallon = 4.55 litres. Work out the cost of the petrol the car used in November.

if you are looking for the unit rate then the answer would be 9 because unit rate is distance divided by time.

step-by-step explanation:

step-by-step explanation:

the ratio of red paint to blue paint is always 9/7. that means that, whatever x's value, (4x+12)/(4x-4) has that same ratio. so, set up an equation and cross-multiply to solve for x:

9/7 = (4x+12)/(4x-4)

9(4x-4) = 7(4x+12)

36x - 36 = 28x + 84

8x - 36 = 84

8x = 120

x = 15