Question

Yochanan walked from home to the bus stop at an average speed of 5 km/h. He immediately got on his school bus and traveled at an average speed of 60km/h until he got to school. The total distance from his home to school is 35 kilometers, and the entire trip took 1.51 hours. How many kilometers did Yochanan cover by walking, and how many kilometers did he cover by travelling on the bus?

Answer 1

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  time walking = 5/5 = 1 hr time on bus = 30/60 = 1/2 hr total =1.5 hours