Answer:
36 minutes
Step-by-step explanation:
we know that
Dan can cycle 7 miles in 28 minutes
so
using proportion
Find out how long will it take him to cycle 9 miles
Let
x ----> the time in minutes to cycle 9 miles
[tex]\frac{7}{28}\frac{miles}{minutes}=\frac{9}{x}\frac{miles}{minutes}\\\\x=28(9)/7\\\\x=36\ minutes[/tex]