SOLUTION: andrew goes by bus for part of his way to work and walks the rest. the speed of the bus is 24 km/h and he walks at 9km/h. if the distance between the house and the office is 30 km

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Question 875150: andrew goes by bus for part of his way to work and walks the rest. the speed of the bus is 24 km/h and he walks at 9km/h. if the distance between the house and the office is 30 km and it takes him 1 1/3 hours to go to the office, how long does he spend walking?
Answer by lwsshak3(11628) About Me  (Show Source):
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andrew goes by bus for part of his way to work and walks the rest. the speed of the bus is 24 km/h and he walks at 9km/h. if the distance between the house and the office is 30 km and it takes him 1 1/3 hours to go to the office, how long does he spend walking?
***
let x=walking distance
30-x=bus distance
travel time=distance/speed
x%2F9%2B%2830-x%29%2F24=4%2F3
LCD:72
8x+90-3x=96
5x=6
x=6/5
x/9=6/45 hr=8 min
how long does andrew spend walking? 8 min