You walked 2⁄15 miles from your chemistry class to your economics class at a constant speed of 0.8 miles per hour. how long did this take you? minute

0.8 miles = 1 hour 


Calculate 1 mile :

1 mile =  1 ÷ 0.8 hour 
1 mile = 1.25 hour


Calculate 2/15 miles :

2/15 miles = 1.25 x 2/15 
2/15 miles = 1/6 of an hour


Convert hour to minutes :

1/6 of an hour = 1/6 x 60 mins
1/6 of an hour = 10 mins


It takes 10 minutes.