SOLUTION: Mel has some coins in her purse consisting of 1 peso, 5 peso and 10 peso coins. She has three more 5 peso coins than 10 peso coins. The number of her 1 peso coins is twice the numb
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Question 1023877: Mel has some coins in her purse consisting of 1 peso, 5 peso and 10 peso coins. She has three more 5 peso coins than 10 peso coins. The number of her 1 peso coins is twice the number of her 5 peso coins. Which polynomial gives Mel's total amount of money if 'x' is the number of 10 peso coins?
choices given:
a. 4x+9
b. 15x+25
c. 16x+18
d. 17x+21
And please provide an explanation so I may understand my flaws with this problem.
Answer by Alan3354(69443) (Show Source): You can put this solution on YOUR website!
Mel has some coins in her purse consisting of 1 peso, 5 peso and 10 peso coins. She has three more 5 peso coins than 10 peso coins. The number of her 1 peso coins is twice the number of her 5 peso coins. Which polynomial gives Mel's total amount of money if 'x' is the number of 10 peso coins?
----------------
x = 10's
x+3 = 5's
2*(x+3) = 1's = 2x+6
----
x
x +3
2x+6
-------------- Add
4x+9
=======================
choices given:
a. 4x+9
b. 15x+25
c. 16x+18
d. 17x+21
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