Answer:
n + d = 30 ---------------------(1)
0.05n + 0.10d = 2.20 ----------(2)
Step-by-step explanation:
Luis is saving money to purchase a new video game.
'n' be the number of nickels and 'd' is the number of dimes.
Statement (1)
He has total 30 coins consisting of nickels and dimes.
n + d = 30 ---------(1)
Statement (2)
The value of coins is $2.20.
∵ 1 nickel = $0.05
∴ n nickels = $0.05n
∵ 1 dime = $0.10
∴ d dimes = $0.10d
Now as per statement 0.05n + 0.10d = 2.20 ----------(2)
This is the system of two equations which can be used to determine the number of nickels and dimes Luis has.
