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Veronica has $2.80, which consists of only quarters and nickels. If the number of quarters is half the number of nickels, how many coins does she have in total?

Respuesta :


[tex]x = 0.5y \\ 0.25x + 0.05y = 2.80[/tex]
Substitute x into
[tex]0.25(0.5y) + 0.05y = 2.80 \\ 0.175y = 2.80 \\ y = 16[/tex]
[tex]x = 0.5(16) \\ x = 8[/tex]
Total coins = 8 + 16 = 24

Hope this helps. - M

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