SOLUTION: Jill walks from her home at 8km/h and gets a ride back home at 40km/h. If her total traveling time is half an hour, how long did it take Jill to walk to the movies and how far was
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Question 970136: Jill walks from her home at 8km/h and gets a ride back home at 40km/h. If her total traveling time is half an hour, how long did it take Jill to walk to the movies and how far was it?
Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!
Let = distance in km she walks from home
Let = time in hours walking from home
= time spent riding back
---------------------------------
Walking from home:
(1)
Riding back:
(2)
-----------------------
By substitution:
(2)
(2)
(2) hrs
(2)
(2) min
-----------------
(1)
(1)
(1)
She walked 3.333 km in 25 min
-----------------------------
check:
(1)
(1)
(1)
and
(2)
(2)
(2)
(2)
OK
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