3. Shipping charges at an online bookstore are $4 for one book, $6 for two books, and $7 for three to five books. Last week, there were 6400 orders of five or fewer books, and total shopping charges for these orders were$33,600. The number of shipments with $7 charges was 1000 less than the number with $6 charges. How many shipments were made in each category?
3. Shipping charges at an online bookstore are $4 for one book, $6 for two books, and $7 for three to five books. Last week, there were 6400 orders of five or fewer books, and total shopping charges for these orders were$33,600. The number of shipments with $7 charges was 1000 less than the number with $6 charges. How many shipments were made in each category?
Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
Problem 1RQ
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Define variables, write systems of equations, write coefficient matrix, the B matrix and the solution matrix, x
Transcribed Image Text:3. Shipping charges at an online bookstore are $4 for one book, $6 for two books, and $7 for three
to five books. Last week, there were 6400 orders of five or fewer books, and total shopping
charges for these orders were$33,600. The number of shipments with $7 charges was 1000 less
than the number with $6 charges. How many shipments were made in each category?
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