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Gabby has 20 coins in her pocket that are quarters, dimes, and nickels. The total value of the coins is $2.70. The number of nickels that she has is equal to the number of quarters plus the number of dimes. Choose the system of equations that can be solved to find the number of quarters, 9, dimes, d, and nickels, n, that Gabby has.

Answer :

DUSTYPLAYZYTGO

Answer:

There's 9 nickels and no dimes

Step-by-step explanation:

the quarters equal $2.25

so there is at least 9 nickel's witch equals .45 cents add them and get $2.70 so

ADIOABIOLAGO

The system of equations to find the number of quarters, 9, dim, d, and nickels, n, that Gabby has are;

  • n = q + d
  • n = 10
  • q +d = 10

Since, the total value of quarters, dim, and nicke is; $2.70.

Since the number of nickels that she has is equal to the number of quarters plus the number of dimes; we have;

  • n = q + d

Since, Gabby has 20 coins in her pocket.

  • n + q + d = 20

Therefore 2n = 20 from n = q + d

  • n = 10

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