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toxsicity
30.11.2020 •
Mathematics
At the school store the cost of three markers and two pencils is exactly $2.20 while the cost of four markers and six pencils is exactly $3.40. How much would it cost to buy 1 marker and 2 pencils?
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Ответ:
Step-by-step explanation:
Let cost of 1 marker be
and 1 pencil be ![y](/tpl/images/0934/5471/9512c.png)
From the question we get two equations
Multiply the first equation by 3![(i)\times3](/tpl/images/0934/5471/564e4.png)
Subtracting the above equations
we get
One marker costs $0.64 and one pencil costs $0.14
Cost of 1 marker and 2 pencils is
.
Ответ:
3
3
Leading Term:
5
n
3
5
n
3
Leading Coefficient:
5