Sonia is walking home from a friends house after two minutes she is 1.4 miles from home 12 minutes after leaving she is .9 miles from home what is her rate

Question

Sonia is walking home from a friends house after two minute she is 1.4 miles from home 12 minutes after leaving she is 0.9 miles from home what is her rate 

Answer 1

after 2 minutes she is 1.4 miles from home

after 12 minutes she is 0.9 miles from home

this means that in 10 minutes of walking she traveled 0.5 miles

0.5 miles/10 minutes=5 miles/100 minutes

5 miles/100 minutes=1 mile /20 minutes

1 mile/20 minutes=1/20 of a mile per minute is her rate

after 2 minutes she walked 1/10 mile and is 1.4 miles from home so the distance between homes is 1.5 miles

after 12 minutes she walked 12/20=6/10 miles and is 0.9 miles from home, 0.6+0.9=1.5 miles again