SOLUTION: a taxi cab charges 4$ per minute for local roads and 7$ per minute for highways. Max rode on a taxi can and traveled both local roads and a highway. If he spent 59$ on a ride that

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Question 890030: a taxi cab charges 4$ per minute for local roads and 7$ per minute for highways. Max rode on a taxi can and traveled both local roads and a highway. If he spent 59$ on a ride that lasts 11 minutes in total, how much time did max spend in the taxi going over the local roads?
Answer by josmiceli(19441) About Me  (Show Source):
You can put this solution on YOUR website!
Let +t+ = the time in minutes Max
spent on local roads
+11-+t+ = time in minutes Max spent on
highways
---------------------
+4t+%2B+7%2A%28+11+-+t+%29+=+59+
+4t+%2B+77+-+7t+=+59+
+-3t+=+-18+
+t+=+6+
+11+-+t+=+5+
Max spent 6 minutes on local roads
check:
+4t+%2B+7%2A%28+11+-+t+%29+=+59+
+4%2A6+%2B+7%2A%28+11+-+6+%29+=+59+
+24+%2B+7%2A5+=+59+
+24+%2B+35+=+59+
+59+=+59+
OKJ