# Thread: Linda purchased 3 books

1. Good post? |

## Linda purchased 3 books

[FONT='Arial','sans-serif']Linda purchased 3 books at a book fair. What was the median price of the 3 books?[/FONT]
[FONT='Arial','sans-serif'](1) The average (arithmetic mean) price of the 3 books was \$1.5[/FONT]
[FONT='Arial','sans-serif'](2) The price of one of the 3 books was \$1.5[/FONT]
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SPOILER:
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2. Good post? |
1) Average = 1.5
This doesn't give any information about individual prices of books.
All we know is
(X + y + z) = 4.5
There are many combination which satisfy this.

2) say x = 1.5
we need median of 1.5 , y ,x
Not sufficient

combining 1 and 2
average is 1.5 and one of the book 1.5
That means among rest of the 2 books one book cost s more than 1.5 and one cost s less than 1.5
or
Both costs 1.5 each

In both the cases 1.5 is the mean

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