Posted by Kris on Tuesday, December 8, 2009 at 12:55am.
I believe you stated the question incorrectly. It matters whether she spend 1/10 of the TIME walking or walked 1/10 of the DISTANCE.
The way you state it, she rode the bus 9/10 of the DISTANCE which would mean that she walked 1/10 of the distance. If she walked 1/10 of the time and covered 1/10 of the distance while doing so, she must have walked as fast as the bus, which is unlikely.
They probably want you to say she walked 0.7 km and rode the bus 6.3 km.
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