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Trip to Boston

Math brain teasers require computations to solve.


Puzzle ID:#10475
Fun:*** (2.67)
Difficulty:** (1.74)
Submitted By:Bobbrt*****




Glenn and Steve took turns driving on a trip to Boston and back. Glenn drove the first 40 miles and Steve drove the rest of the way to Boston. On the way back, Glenn started to drive, and then Steve drove the last 50 miles.

Which of the two drove more, and how much more did he drive?

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Mar 11, 2003

Using G for the distance that Glenn drove, S for Steve's distance, and D for the total between "there" and Boston:

Glenn drove 40 miles, plus all but 50 miles of the way back. G=40+(D-50). This is the same as G=D-10.

Steve drove all but 40 miles, plus 50 miles on the way back. S=(D-40)+50. Simplifying again gives S=D+10.

As the answer showed, clearly S is 20 more than G.

Nice puzzle.
May 20, 2004

This is like...Dude!
How could you figure that out? Dude, I know...I know, I sound stupid, but...DUDE!
May 20, 2004

i thought this was fun but it was easy at the same time. good job!
May 20, 2004

Good one! This wasn't too hard, to where you'd get frustrated with it, but it also wasn't like so encredibly easy, either. Nice Job!
May 26, 2006

Nice, compact, well done!

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