I have 31 stamps total. I have 4 more 1-cent stamps than 8-cent stamps and twice as many one cent stamps as 12 cent stamps. If m
y stamps are worth $1.78 altogether how many one cent stamps do I have?
2 answers:
The answer is ($1.78) I did the math
Answer: 14 1-cent stamps (in case anyone else still needs)
Step-by-step explanation:
1-cent stamps=x
8-cent stamps=x-4
12-cent stamp=.5x
x+x-4+.5x=31
2.5x-4=31
2.5x=35
x=14
You can use the $1.78 to double check:
(1*14)+(8*10)+(12*7)
14+80+84=178 cents (or $1.78)
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