Question

- Adrian's car gets about 12.5 kilometers per liter. He is planning a 1,600 kilometer trip.

a) About how many liters of gas should Adrian plan to buy? Round your answer to the nearest liter.

b) At an average price of $0.90 US per liter, how much should Adrian expect to spend for gas?​

Answer 1

a) 128 liters

b) $ 115.2

Explanation:

Part a)

12.5 km = 1 liter

1 km = 1/12.5 liters

Multiplying both sides by 1,600

1600 km = 1600 / 12.5 liters

1600 km = 128 liters

Part b)

1 liter = $ 0.90

128 liters = 128 * 0.90

128 liters = $ 115.2

`\rule[225]{225}{2}`

Hope this helped!

~AH1807

Answer 2

`\Large \boxed{\sf a)\ 128 \ liters \ \ \ b)\ \$ \ 115.20}`

Explanation:

a) distance/unit rate = 1600/12.5 = 128

b) liters of gas × unit price = 128 × 0.90 = 115.2