Question 998926

Can you help me understand how to solve this word problem: A bus traveling at an average 65 miles per hour made a trip to town in 5 hours. If it had traveled at 50 miles per hour how many Kore minutes would it have taken to make the trip? 
<pre>Distance: 325 (5 * 65) miles
Time at 50 mph: {{{325/50}}}, or 6.5 hours
Difference: 1.5 hours, or {{{highlight_green(90)}}} minutes