SOLUTION: word problem
a cashier has 25 coins. She has nickels, dimes and quarters. The total amount is $4.90. The dimes are 1 less than twice the number of nickels. I need to show the MATR
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Question 881698: word problem
a cashier has 25 coins. She has nickels, dimes and quarters. The total amount is $4.90. The dimes are 1 less than twice the number of nickels. I need to show the MATRIX, solve the problem and write a sentence at the end of the problem explaining the answer.
Answer by josgarithmetic(39621) (Show Source): You can put this solution on YOUR website!
n, d, q, for nickels, dimes, quarters.
;
;
;
Changing to adjust the form of the first equation,
Resulting Matrix:
Best to multiply the third row by 100 so you have all integers for the matrix:
... and divide row 3 by 5 to have the smallest integers:
Can you continue what you need to do from here?
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