Question

Luis is saving money to purchase a new video game. He has a total of 30 coins consisting of nickels and dimes. The value of the coins is $2.20. Let n represent the number of nickels and let d represent the number of dimes. Which system of equations can be used to determine the number of nickels and the number of dimes Luis has?

Answer 1

It should be

n + d = 30

0.05n + 0.1d = 2.20

A dime is worth 0.10 cents and a nickel is worth 0.05 cents. The total number of nickels and dimes is 30.

Answer 2

14 dimes & 16 nickels.

do they give you options for the system of equations to choose from?