Hi ziyuenlau,

This question can be solved rather easily by TESTing THE ANSWERS.

We're told that each of 6 friends paid $22 for a cab fare - and that that $22 included a 10% tip. The question asks us for the cost of the cab BEFORE the tip was added.

Since each of the 6 friends paid $22/each, they paid a total of (6)($22) = $132, so we're looking for an answer that becomes $132 when you increase it by 10%...

Let's TEST Answer B: $120

$120 + (10% of $120) = $120 + $12 = $132

This is an exact match for what we were told, so this MUST be the answer.

Final Answer:

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Rich

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