Question

A motorcycle can travel 70 miles per gallon. Approximately how many gallons of fuel will the motorcycle need to travel 60 km?

[1 mile = 1.6 km]
a- 0.2
b- 0.5
c- 0.8
d- 1.4

Answer 1

We have the following given

mileage = 70 miles per gallon

distance = 60 km

Required: amount of fuel in gallons

First, we must convert the distance to miles, so

60 km (1 mi/1.6 km) = 37.5 mi

So, the amount of fuel is

37.5 mi / (70 mi/gal) = 0.54 gallon

Answer 2

B

Explanation:

70 miles * [1.6 km/mile] = 112 km

Notice when you multiply by km/mile by miles the miles cancel out.

1 gallon will get 112 km

x gallon will get 60 km

• 1/x = 112/60 cross multiply
• 1 * 60 = 112 * x divide by 112
• 60/112 = x switch
• x = 60/112 Do the division
• x = 0.54 Which rounds to 0.5