Yochan walked from home to the bus stop at an average speed of 5mph. He immediately got on the bus and traveled at an average speed on 60mph until he got to school

Step-by-step explanation:

distance by bus - - - x km

distance walking - - 35-x km

x/5 + (35-x) / 60 = 1.5

times 60

12x + 35-x = 90

11x = 55

x = 5

he walked 5 km, and went 30 km by bus

check:

time walking = 5/5 = 1 hr

time on bus = 30/60 = 1/2 hr

total is 1.5 hrs