how long did it take Betty to drive nonstop on a trip from her home to Denver,Colorado??
(1) If Betty's average sepped for the trip had been 1.5 times as fast, the trip would have taken 2 hours.
(2) Betty's average speed for the trip was 50 miles per hour.
我選C啦~~可是答案卻是A~~可是(1)明明只能可以算出時間,怎麼可以算出距離呢??麻煩各位大大解釋一下囉~~