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Joined: 19 Dec 2014
Status:GMAT Assassin/Co-Founder
Affiliations: EMPOWERgmat
Posts: 21843
Given Kudos: 450
Location: United States (CA)
GMAT 1: 800 Q51 V49
GRE 1: Q170 V170
Re: Thabo owns exactly 140 books, and each book is either paperback fictio
[#permalink]
02 Jul 2019, 14:33
02 Jul 2019, 14:33
1
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Expert Reply
Hi manish0709,
If you're not sure how to properly 'translate' a Quant sentence into an equation, it can often help to come up with a simple example as a reference (and then use that example to create your equation). In this prompt, we're told that Thabo has "twice as many paperback fiction books as paperback nonfiction books." Thus, he has MORE paperback FICTION books than paperback NONFICTION books.
Based on just this information, Thabo might have 10 paperback FICTION books and 5 paperback NONFICTION books. Thus, to get the number of paperback FICTION books, we have to DOUBLE the number of paperback NONFICTION books.
Paperback FICTION = 2(Paperback NONFICTION)
GMAT assassins aren't born, they're made,
Rich
If you're not sure how to properly 'translate' a Quant sentence into an equation, it can often help to come up with a simple example as a reference (and then use that example to create your equation). In this prompt, we're told that Thabo has "twice as many paperback fiction books as paperback nonfiction books." Thus, he has MORE paperback FICTION books than paperback NONFICTION books.
Based on just this information, Thabo might have 10 paperback FICTION books and 5 paperback NONFICTION books. Thus, to get the number of paperback FICTION books, we have to DOUBLE the number of paperback NONFICTION books.
Paperback FICTION = 2(Paperback NONFICTION)
GMAT assassins aren't born, they're made,
Rich
Re: Thabo owns exactly 140 books, and each book is either paperback fictio
[#permalink]
02 Jul 2019, 14:58
02 Jul 2019, 14:58
Cheryl purchased 5 identical hollow pine doors and 6 identical solid oak doors for the house she is building. The regular price of each solid oak door was twice the regular price of each hollow pine door. However, Cheryl was given a discount of 25% off the regular price of each solid oak door. If the regular price of each hollow pine door was $40, what was the total price of all 11 doors?
A. $320
B. $540
C. $560
D. $620
E. $680
in this question "The regular price of each solid oak door was twice the regular price of each hollow pine door" is this different from the thabo question?
A. $320
B. $540
C. $560
D. $620
E. $680
in this question "The regular price of each solid oak door was twice the regular price of each hollow pine door" is this different from the thabo question?
GMAT Club Legend
Joined: 19 Dec 2014
Status:GMAT Assassin/Co-Founder
Affiliations: EMPOWERgmat
Posts: 21843
Given Kudos: 450
Location: United States (CA)
GMAT 1: 800 Q51 V49
GRE 1: Q170 V170
Re: Thabo owns exactly 140 books, and each book is either paperback fictio
[#permalink]
02 Jul 2019, 19:15
02 Jul 2019, 19:15
Expert Reply
Hi manish0709,
Both examples relate a variable to a second variable by multiplication (in this case, by 2), so the basic math concept is the same. In the Thabo question, we're dealing with the NUMBER of two items, whereas in this question, we're dealing with the PRICES of two items.
"The regular price of each solid oak door was twice the regular price of each hollow pine door"
This means that if we multiply the regular price of a hollow pine door, then we'll have the regular price of a solid oak door. For example, if the price of a regular hollow pine door is $5, then the price of a regular solid oak door would be $10. Thus:
(Price of regular oak door) = 2(Price of regular pine door)
GMAT assassins aren't born, they're made,
Rich
Both examples relate a variable to a second variable by multiplication (in this case, by 2), so the basic math concept is the same. In the Thabo question, we're dealing with the NUMBER of two items, whereas in this question, we're dealing with the PRICES of two items.
"The regular price of each solid oak door was twice the regular price of each hollow pine door"
This means that if we multiply the regular price of a hollow pine door, then we'll have the regular price of a solid oak door. For example, if the price of a regular hollow pine door is $5, then the price of a regular solid oak door would be $10. Thus:
(Price of regular oak door) = 2(Price of regular pine door)
GMAT assassins aren't born, they're made,
Rich
