Question

If you're going 80 miles per hour, how long does it take to go 40 miles?

Answer 1

it takes half an hour
80miles ---- 1 hr
40miles ---- x hr
that implies 80x=40
x=1/2

Answer 2

i think 30 mins because 80 is one hour than 40 is because
$4 \times 1 = 4$
$4 \times 2 = 8$
in this some 80 is tow 80 half is forty means half of one hour is 30 mins ok