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What is the elimination method of the question Suppose Ken has 25 coins in nickels and dimes only and has a total of 1.65. how many of each coin does he have?
Wiki User
∙ 11y ago
A system. X = nickles and Y = dimes. all money changed to pennies for convenience.
- 5(X + Y = 25)
5X + 10Y = 165
- 5X - 5Y = - 125
5X + 10Y = 165
----------------------------add
5Y = 40
Y = 8
======so (25 - 8 = 17)
X = 17
============
Wiki User
∙ 11y ago
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