Question: Taxi Ride

Comment on Taxi Ride

do we need to know both approaches?
gmat-admin's picture

If you can solve all VIAC's algebraically, then that's probably the faster approach. That said, it's not a bad idea to know both the algebraic approach AND the input-output approach.

actually you can see a pattern when you make the formula, and immediately realize the answer should be E.

Let's say 10$ for first 2 miles and 2$ for a mile after that, you get 10+2(t-2), substitute to the answer as S + y(t-2)
gmat-admin's picture

Nice work!

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