80 - 64 = 16
16 ÷ 80= 0.2
0.2= 20%
The passenger train will take 2.5 hours to catch the freight train.
<em><u>Explanation</u></em>
Suppose, it will take hours for the passenger train to catch the freight train.
As the passenger train leaves the station after 30 minutes or hour , so <u>the freight train will travel the same distance as the passenger train</u> in hours.
Speed of the freight train is 60 mph and speed of the passenger train is 72 mph.
As , so the equation will be......
So, the passenger train will take 2.5 hours to catch the freight train.
first part: 5% of $94 is 0.05*94=$4.70
second part: 80% of 45 questions is .8*45 = 36