Problema Solution
A student has 43 coins worth a total of $6.15. Each coin is either a nickel (five cents) or a quarter (twenty-five cents). If x is the number of nickels, then x can be determined from the equation
Answer provided by our tutors
x = number of nickels
43 - x = number of quarters
$6.15 = 615 cents
The equation used to determine x is:
5x + 25(43 - x) = 615
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click here to see the equation solved for x
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x = 23 nickles
The number of nickels is 23.