uchapman6286
10.12.2019 •
Mathematics
You have 59 total coins for a total of $12.05. you only have quarters and dimes. how many of each coin do you have?
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Ответ:
0.25x+0.1y=12.05 x+y=59
0.25(59-y)+0.1y=12.05 x=59-y
14.75-0.25y+0.1y=12.05 x=59-18
-0.15y=12.05-14.75 x=41
-0.15y=-2.7
y=18
therefore, you have 18 dimes and 41 quarters
Ответ:
C
Step-by-step explanation:
well when we multiply to get a common denominator we get 25/30 and 12/30 so the only possible answer is 1/3