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mr Goodwill [35]
3 years ago
6

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?
Mathematics
2 answers:
makkiz [27]3 years ago
5 0

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.

madreJ [45]3 years ago
4 0
N + d = 30
0.05n + 0.10d = 2.20

^^ ur system of equations
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