Question 634461
Let x be the mph speed of the bus. Then 2x is the speed of the car. 25/x is the travel time of the bus and 25/(2x) is the travel time of the car. So

{{{25/x+25/(2*x)=3/2}}}

{{{2*x*(25/x)+2*x*(25/(2*x))=2*x*(3/2)}}}

{{{50+25=3*x}}}

{{{x=25}}}

So the bus speed is 25 mph and the car speed is 50 mph.