SOLUTION: It takes Helen 4.5 minutes to slow her automobile to the 65 mph speed limit. If Helen slowed 1.5 mph every 30 seconds, then at what speed was Helen originally traveling?

SOLUTION: It takes Helen 4.5 minutes to slow her automobile to the 65 mph speed limit. If Helen slowed 1.5 mph every 30 seconds, then at what speed was Helen originally traveling?

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Question 1096795: It takes Helen 4.5 minutes to slow her automobile to the 65 mph speed limit. If Helen slowed 1.5 mph every 30 seconds, then at what speed was Helen originally traveling?
Answer by jorel1380(3719) (Show Source): You can put this solution on YOUR website!
4.5 mins/30 secs=9
65+1.5(9)=78.5 mph as Helen's original speed
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