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The price of martha's meal was $10, and she left a tip that

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by BTGmoderatorDC » Wed Jul 25, 2018 6:20 pm

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Answers

A

B

C

D

E

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The price of martha's meal was $10, and she left a tip that was r percent of the price of her meal. Sam left a tip that was s percent of the price of his meal. If Martha and Sam each left a tip of $1.50, what was the price of Sam's meal?

(1) s = 20

(2) s = 4/3r
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by Jay@ManhattanReview » Wed Jul 25, 2018 9:21 pm
BTGmoderatorDC wrote:The price of Martha's meal was $10, and she left a tip that was r percent of the price of her meal. Sam left a tip that was s percent of the price of his meal. If Martha and Sam each left a tip of $1.50, what was the price of Sam's meal?

(1) s = 20

(2) s = 4/3r
Given Same left a tip of $1.50, which is s% of the price of the meal, the price of the meal = 1.50/s% = 1.50*(100/s) = 150/s.

If we get the value of s, we get the answer.

Given Martha left a tip of $1.50, which is r% of the price of the meal ($10), 10 = 1.50/r% => r% = 1.5/10 => r = 15

Let's take each statement one by one.

(1) s = 20

Sufficient.

(2) s = (4/3)r

s = (4/3)*15 = 20

Sufficient.

The correct answer: D

Hope this helps!

-Jay
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