please help I'm failing this class and need to bring my grade up!
 
											 
											Answer:
he rode on his bike for 4.5 hours
Step-by-step explanation:
4.5 x 36 = 162 we are missing 2.5 hours
2.5 x 4 = 10
add 10 + 162 = 172
he walked on foot for 2.5 hours