Tomb-Sweeping Day, a teacher and student of Huaguang Middle School, went to the "Jute Uprising" Martyrs Cemetery 28 kilometers away from the school to receive traditional education.
1 & gt； .
Solution: Suppose we walked for x hours.
4x+( 1-x)36=28
4x+36-36x=28
4x-36x=28-36
-32x=-8
x=0.25
1-0.25=0.75 (hour)
Answer: It takes 0.25 hours to walk and 0.75 hours to drive.