Trevor needs to go downtown for a restaurant date. An Uber ride downtown costs $3 more than a Lyft ride. A Lyft ride costs $4 more than a taxi ride. The Uber ride costs $22. If Trevor takes a taxi downtown and tips the taxi driver 20% of the original cost of the ride, what is the total cost of the ride downtown?
Let's be accurate as possible. Think before you answer.
18
The cost of the Lyft ride is $22 - $3 = $19.

The original cost of the taxi ride is $19 - $4 = $15.

Trevor tips the taxi driver $15 * 0.

20 = $3.

The total cost of the ride downtown is $15 + $3 = $18.

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The answer: 18