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TO and FRO (Posted on 2016-04-25) Difficulty: 1 of 5
A and B drive from X to Y. A drives the first 40 miles, and B drives the rest of the way.
That afternoon they return by the same route, with A driving the first leg and B driving the last 50 miles.
Who drives the farthest, and by what distance?

No Solution Yet Submitted by Ady TZIDON    
Rating: 3.0000 (2 votes)

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Solution Process in my head | Comment 2 of 4 |
I thought: what if B drove a million miles the first time?  Then by driving 50 on the way back, B shorted what A could do to catch up twice: by driving too much and by not allowing A to drive enough. So B did 20 extra miles.

Kenny's answer might make more sense, what with the algebra and all.  I just wanted to justify the D1.

  Posted by Jer on 2016-04-25 17:57:51
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