Answer:
74.56 miles / h
Step-by-step explanation:
1 mile = 1.609 km
Using the dimensional analysis you multiply the number you want to convert by 1 (using a fraction with the needed units)
Since 1 mile = 1.609 km then:
[tex]1= \frac{1 mile}{1.609 km}[/tex]
Now to convert 120 kilometers per hour to miles per hour :
[tex]120 \frac{km}{h} * \frac{1 mile}{1.609 km} = \frac{120}{1.609}\frac{miles}{h} = 74.56 \frac{miles}{h}[/tex]
