Question 678318
Let the car and motorcycle meet after distance x

car speed = 80 km/h
motorcycle speed = 90 km/h

They both travel the same distance

The car takes 4 minutes more .= 4/60 = 1/15 hours

time = distance /speed

car time - motorcycle time = 1/15 hours

(x/80)-(x/90) = 1/15

LCD = 720

multiply equation by 720

9x-8x= 720/15
x= 48 

They will meet after 48 km