Answer:
a. 12.4 mi
Step-by-step explanation:
Hello
this is a unit conversion problem,you must know the equivalence
in this case
1 mi. ≈ 1.61 km.
Now, we need to convert 20 Km into miles
we can use a simple rule of three
1 mi. ⇔ 1.61 km
x mi. ⇔ 20 Km
[tex]\frac{x (mi)}{20 Km} =\frac{1 mi}{1.61 Km} \\\\Now\ isolating\ x\\\ \\x(mi)=\frac{20km*1mi}{1.61 Km} \\x=12.42\ mi\\[/tex]
a. 12.4 mi
Have a fantastic day.
