Concept explainers
Find all the possible ways a person could receive $25 using eagles and quarter-eagles.
Answer to Problem 8MPS
the possible combinations of eagles and quarter- eagles respectively to get $25 :
0,10
1,6
2,2
Explanation of Solution
Given:
The eagle is a 10-dollar gold United States coin minted from 1795 to 1933.
Calculation:
Cost of the eagle = $10
Cost of the quarter-eagle = $2.5
Let number of eagles used = x
Let number of quarter-eagles used = y
The person needs a total of $25.
So, the linear function :
10x + 2. 5y = 25
Now , we find possible combinations of ( x,y ) that satisfy this equation:
Since x and y are number of coins , so they are whole numbers.
Let x = 0
Hence ,
number of eagles = 0
number of quarter-eagles = 10
Let x = 1
Hence ,
number of eagles = 1
number of quarter-eagles = 6
Let x = 2
Hence ,
number of eagles = 2
number of quarter-eagles = 2
So , the possible combinations of eagles and quarter- eagles respectively to get $25 :
0,10
1,6
2,2
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Algebra and Trigonometry: Structure and Method, Book 2
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