SOLUTION: Set up a system of linear equations and solve for the indicated quantities.
Nathan buys a combination of 45 cents stamps and 65 cents stamps at the post office. If he spends e
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Nathan buys a combination of 45 cents stamps and 65 cents stamps at the post office. If he spends e
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Question 1108895: Set up a system of linear equations and solve for the indicated quantities.
Nathan buys a combination of 45 cents stamps and 65 cents stamps at the post office. If he spends exactly $24.50 on 50 stamps, how many of each type did he buy? Found 2 solutions by MathLover1, ikleyn:Answer by MathLover1(20850) (Show Source):
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Nathan buys a combination of 45 cents stamps and 65 cents stamps at the post office. If he spends exactly $24.50 on 50 stamps, how many of each type did he buy?
let cents stamps be and cents stamps
first convert cents to dollars: cents = $ cents = $
if Nathan buys stamps , we have
.....eq.1
If he spends exactly $ on all stamps, we have .....eq.2
solve the system: .....eq.1 .....eq.2
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.....eq.1 ...solve for .....eq.1a...substitute in eq.2
.....eq.2..solve for
now go back to eq.1a and solve for .....eq.1a
Nathan did buy of cents stamps, and of cents stamps
You can put this solution on YOUR website! .
There is about one thousand solved word problems in this site on establishing and solving systems of 2 equations in 2 unknowns.
