henryrojas68 henryrojas68

12-01-2015
Mathematics

contestada

i have twice as many nickels as quarters. if the coins are worth $4.90, how many quarters and nickels do i have?

Respuesta :

konrad509 konrad509

12-01-2015

x - quarters
2x - nickels

[tex]0.25x+0.05\cdot2x=4.9\\ 0.25x+0.1x=4.9\\ 0.35x=4.9\\ x=14\\\\ 2x=2\cdot14=28[/tex]

14 quarters and 28 nickels.

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