a train running at 7/11 of its original speed reached a place in 22 hours. how much time could be saved if the train would have run at its original speed
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The train ran at less than its full speed, which means it ran at a fraction of its full speed. That fraction is 7/11, which translates into a decimal of 0.636.
These facts mean that at full speed the train would have reached its destination in less than 22 hours.
Let t = time at full speed
then t = 0.636 x 22 hours
then t = 14 hours
time saved = 22 hours - 14 hours = 8 hours
These facts mean that at full speed the train would have reached its destination in less than 22 hours.
Let t = time at full speed
then t = 0.636 x 22 hours
then t = 14 hours
time saved = 22 hours - 14 hours = 8 hours
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