Calculate how much time could be saved if the train would run at its usual speed, given that it ran at 4/9 of its own speed and got to its destination in 13 hours? Choose the correct choice from the following answers.
A) 1.22 hrs B) 2.22 hrs C) 5.22 hrs D) 6.22 hrs E) 7.22 hrs
New speed = 4/9 of usual speed   New time = 4/9 of usual time   4/9 of usual time = 13 hrs   Usual time = 13*4/9 = 5.78 hrs   Time saved = 13-5.78= 
<gadget id="calculator">13-5.78</gadget>
<output>7.22</output>
7.22 hrs   Answer is 7.22 hrs
<result>E</result>
Calculate how much time could be saved if the train would run at its usual speed, given that it ran at 4/9 of its own speed and got to its destination in 13 hours?