A certain brand of tea bags comes  in packages of 5,10, and 20 sachets, costing $5, $9, and $15 per package, repectively.  A store sold 16 packages containing a total of 165 sachets and took in $140. a. Write a system of equations to match the description of the information give. b. Determine how many packages of each type were sold using the Inverse Method.

Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
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A certain brand of tea bags comes  in packages of 5,10, and 20 sachets, costing $5, $9, and $15 per package, repectively.  A store sold 16 packages containing a total of 165 sachets and took in $140.

a. Write a system of equations to match the description of the information give.

b. Determine how many packages of each type were sold using the Inverse Method.

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