Question

You decide to take your car on a drive through Canada, where gas is sold in liters and distances are measured in kilometers. Suppose your cars gas efficiency is 38.0mi/gal. How many liters of gas will you need to complete a 305 km trip use? Use the conversions 1gal=3.78L and 1km=0.6214mi.

Answer 1

The answer to your question is 18.9 liters

Explanation:

Data

Efficiency = 38 mi/gal

total distance = 305 km

1 gal = 3.78 l

1 km = 0.6214 mi

Process

1.- Convert the total distance to miles

1 km ------------------ 0.6214 mi

305 km ---------------- x

x = (305 x 0.6214) / 1

x = 189. 53 mi

2.- Calculate the gallons needed

38 mi ----------------- 1 gal

189.53 mi -------------- x

x = (189.53 x 1)/38

x = 4.988 gal

3.- Convert the gallons to liters

1 gal ------------------- 3.78 l

4.988 gal --------------- x

x = (4.988 x 3.78) / 1

x = 18.9 l