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At a souvenir shop, all posters are priced equally and all maps are priced equally. What is the total price of 8 posters and 6 maps at the souvenir shop?

1) At the souvenir shop, the total price of 4 posters and 3 maps is $39.70

2) At the souvenir shop, the total price of 12 posters and 9 maps is $119.10

This is such a classic GMAT question. It preys on our instinct to mark E by assuming that both conditions reduce to the same equation, not realizing that we don't really need the price of each poster or map.

Hindsight 20/20 though! :roll:
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At a souvenir shop, all posters are priced equally and all maps are priced equally. What is the total price of 8 posters and 6 maps at the souvenir shop?

1) At the souvenir shop, the total price of 4 posters and 3 maps is $39.70

2) At the souvenir shop, the total price of 12 posters and 9 maps is $119.10

This is such a classic GMAT question. It preys on our instinct to mark E by assuming that both conditions reduce to the same equation, not realizing that we don't really need the price of each poster or map.

Hindsight 20/20 though! :roll:
I just marked answer C and didn't realize that I can reduce the equation in each line to match the one asked in the question. Argh. :x
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At a souvenir shop, all posters are priced equally and all maps are priced equally. What is the total price of 8 posters and 6 maps at the souvenir shop?


This question can be tricky, we are asked for 8p + 6m ?

1) At the souvenir shop, the total price of 4 posters and 3 maps is $39.70

4p + 3m = 39.70 ==> Multiply this by 2

8p + 6m = 79.40

Hence, (1) ===== is SUFFICIENT

2) At the souvenir shop, the total price of 12 posters and 9 maps is $119.10

12p + 9m = 119.10

\(12 * \frac{2}{3} * p + 9 * \frac{2}{3} * m = 119.10 * \frac{2}{3}\)

8p + 6m = 79.40

Hence, (2) ===== is SUFFICIENT

Hence, Answer is D
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Bunuel How do we use the EVI Rule Equations > Variables are insufficient.
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I Immediately marked C, thinking its 2 distinct linear equations and then realized that it was just a trap :(.
GMAT =1, Hasan=0
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At a souvenir shop, all posters are priced equally and all maps are priced equally. What is the total price of 8 posters and 6 maps at the souvenir shop?

1) At the souvenir shop, the total price of 4 posters and 3 maps is $39.70

2) At the souvenir shop, the total price of 12 posters and 9 maps is $119.10

8p+6m=?
4p+3m=?

Statement 1: Directly gives us the value.

Statement 2: 12p+9m=119.10. 4p+3m=Who cares. Sufficient.

Answer D
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Hi Bunuel, this is a Gmatprep question, please tag. Thank you!
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Hi Bunuel, this is a Gmatprep question, please tag. Thank you!

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Added the tag. Thank you.
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At a souvenir shop, all posters are priced equally and all maps are priced equally. What is the total price of 8 posters and 6 maps at the souvenir shop?

1) At the souvenir shop, the total price of 4 posters and 3 maps is $39.70

2) At the souvenir shop, the total price of 12 posters and 9 maps is $119.10
Attachments

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