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Sagot :
3. 25 cents per quarter, and then the reamaining amount ids dimes, which are 10 cents apeice.
Answer:
(3) [tex]0.25q+0.10(72-q)=14.70[/tex]
Step-by-step explanation:
Let d represent number of dimes and q represent number of quarters.
We have been given that Byron has 72 coins in his piggy bank. We can represent this information in an equation as:
[tex]q+d=72...(1)[/tex]
We are also told that the value of all coins is $14.70.
Value of d dimes: [tex]0.10d[/tex].
Value of q quarters: [tex]0.25q[/tex].
[tex]0.25q+0.10d=14.70...(2)[/tex]
From equation (1), we will get:
[tex]d=72-q[/tex]
Substitute this value in equation (2):
[tex]0.25q+0.10(72-q)=14.70[/tex]
Therefore, the equation [tex]0.25q+0.10(72-q)=14.70[/tex] can be used to determine q, the number of quarters.
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