Question 399194
Caroline covers 1200 miles on her business trip driving on a combination of
 snowy roads and ice-free ploughed roads one winter.
 Her average speed on the snowy roads is 40 mph while she maintains 60 mph on the ice-free pavement.
 If her driving time on the snowy road is 1/4 times that of the ice free road,
 how many hours has elapsed since Caroline left home? 
:
Let t = time on snowy roads
then
4t = time on clear roads
;
Write a distance equation: Dist = speed * time
:
snow dist + clear dist = 1200 miles
40t + 60(4t) = 1200
:
this is the equation, her total time would be 5t, wouldn't it