Posted by **Connie (g/ma)** on Monday, February 18, 2008 at 9:33pm.

I am lost.

Question: Blake bought 21 books. The least he spent for a book was $18. The most he spent for a book was $25. What could be the amount that he ended up paying for his books?

a.$375

b.$530

c. $175

d. $445

- math -
**Reiny**, Monday, February 18, 2008 at 9:51pm
Ahhh, great question!!!!

We know two of the prices, the high and the low, which is a total of $43.

So the average price of the remaining 19 books must be > $18 and < $25

(375-43)/19 = 17.5 no good

(530-43)/19 = 25.6 no good

(175-43)/19 = 6.9 no good

**(445-43)/19 = 21.1 YUP!, that's it.**

## Answer This Question

## Related Questions

- Math - Nine books are to be bought by a student. Some cost $6.00 each and the ...
- math - Bella spent 4/7 of her money on a dictionary and 3 identical books. She ...
- Maths (Linear Equation) - Nine books are to be bought by a student. Some cost $6...
- Arithmetic - A box in a college bookstore contains books, and each book in the ...
- MATHS - A woman had $200. she went to the meatshop, a drug store and a book ...
- English - 1. Most of the money is spent to buy books. 2. Most of the money is ...
- Math - A book store sells books for $4 each. When a customer purchases 2 books ...
- grammar - There is not a book. There are not books. There is no orange. There ...
- mathematics - A book seller purchased 117 books out of which 45 books of ...
- Arithmetic - A box in a college bookstore contains books, and each book in the ...

More Related Questions