Question

Abdul is on his way home in his car. He has driven 20 miles so far, which is four-fifths of the way home. What is the total length of his drive?

miles
S
?

Answer 1

all the total length of his drive, x.
Thus 4/5 of x is the 20 miles he has driven, or
(4/5)x = 20
Now divide both sides by 4/5 (which is multiplying by 5/4) and get
x = 25 miles

Answer 2

25 miles

Explanation:

You can do 20/x = 4/5 and cross multiply and x will equal 25