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A certain bookstore sells only paperbacks and hardbacks. Eac
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25 May 2018, 09:45
25 May 2018, 09:45
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72% (01:18) correct
27% (00:55) wrong based on 139 sessions
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A certain bookstore sells only paperbacks and hardbacks. Each of the 200 paperbacks in stock sells for a price between $8 and $12, and each of the 100 hardbacks in stock sells for a price between $14 and $18.
A) Quantity A is greater.
B) Quantity B is greater.
C) The two quantities are equal.
D) The relationship cannot be determined from the information given.
Quantity A |
Quantity B |
The average price of the books in stock at the bookstore |
$9.99 |
A) Quantity A is greater.
B) Quantity B is greater.
C) The two quantities are equal.
D) The relationship cannot be determined from the information given.
Re: A certain bookstore sells only paperbacks and hardbacks. Eac
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17 Jul 2018, 09:23
17 Jul 2018, 09:23
2
Paperbacks sell between $8 and $12 and there are altogether 200 paperbacks.
Hence least price for the 200 paperbacks would be \(200 * 8 = 1600\)
While there are 100 hardcover and each sell for anything between $14 and $18
The least the hardcover could sell for is \(14* 100 = 1400\)
Therefore the least average would be \(\frac{1600+1400}{300} = 10\)
For any other combination of price for paperback and hardcover the avg would be more than 10
Hence least price for the 200 paperbacks would be \(200 * 8 = 1600\)
While there are 100 hardcover and each sell for anything between $14 and $18
The least the hardcover could sell for is \(14* 100 = 1400\)
Therefore the least average would be \(\frac{1600+1400}{300} = 10\)
For any other combination of price for paperback and hardcover the avg would be more than 10
Re: A certain bookstore sells only paperbacks and hardbacks. Eac
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28 Jan 2023, 02:42
28 Jan 2023, 02:42
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