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by GMATGuruNY » Fri Sep 30, 2016 3:44 am
P(dark chocolate or nuts) = (total dark chocolate + milk chocolate with nuts)/(total candies).
The value in blue will account for all of the candies that are BOTH dark chocolate AND nut-filled.

Total dark chocolate = 20.
Milk chocolate candies with nuts = 20% of 25 = 5.
Total candies = (total dark chocolate) + (total milk chocolate) = 20+25 = 45.
Thus:
P(dark chocolate or nuts) = (20+5)/45 = 25/45.

The correct answer is C.
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by conquistador » Fri Sep 30, 2016 5:29 am
GMATGuruNY wrote:P(dark chocolate or nuts) = (total dark chocolate + milk chocolate with nuts)/(total candies).
The value in blue will account for all of the candies that are BOTH dark chocolate AND nut-filled.

Total dark chocolate = 20.
Milk chocolate candies with nuts = 20% of 25 = 5.
Total candies = (total dark chocolate) + (total milk chocolate) = 20+25 = 45.
Thus:
P(dark chocolate or nuts) = (20+5)/45 = 25/45.

The correct answer is C.
here we have dark chocolates=20(4 with nuts and 16 without nuts)
Milk chocolate candies= 25(5 with nuts and 20 without nuts)
now he asked dark chocolate or nuts meaning dark+nuts(milk+dark)-dark with nuts. I'm confused with the question wording.
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by GMATGuruNY » Fri Sep 30, 2016 8:40 am
Mechmeera wrote:
GMATGuruNY wrote:P(dark chocolate or nuts) = (total dark chocolate + milk chocolate with nuts)/(total candies).
The value in blue will account for all of the candies that are BOTH dark chocolate AND nut-filled.

Total dark chocolate = 20.
Milk chocolate candies with nuts = 20% of 25 = 5.
Total candies = (total dark chocolate) + (total milk chocolate) = 20+25 = 45.
Thus:
P(dark chocolate or nuts) = (20+5)/45 = 25/45.

The correct answer is C.
here we have dark chocolates=20(4 with nuts and 16 without nuts)
Milk chocolate candies= 25(5 with nuts and 20 without nuts)
now he asked dark chocolate or nuts meaning dark+nuts(milk+dark)-dark with nuts. I'm confused with the question wording.
Your approach is correct.
The colored portion = 20 + (4+5) - 4 = 25.
Since 25 of the 45 nuts will yield a favorable outcome, P = 25/45.
Private tutor exclusively for the GMAT and GRE, with over 20 years of experience.
Followed here and elsewhere by over 1900 test-takers.
I have worked with students based in the US, Australia, Taiwan, China, Tajikistan, Kuwait, Saudi Arabia -- a long list of countries.
My students have been admitted to HBS, CBS, Tuck, Yale, Stern, Fuqua -- a long list of top programs.

As a tutor, I don't simply teach you how I would approach problems.
I unlock the best way for YOU to solve problems.

For more information, please email me (Mitch Hunt) at [email protected].
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