Frantzael0605
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A jar contains nickels and dimes. There are 20 coins in the jar, and the total value of
the coins is $1.40. How many nickels and how many dimes are in the jar.
Write the system of equations used to solve this problem. Define the variables.
(Hurry)

Respuesta :

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Answer:

Step-by-step explanation:

n and d are the number of nickels and dimes, respectively.

"there are 20 coins"

n+d = 20

d = 20-n

"total value is $1.40"

0.05n + 0.10d = 1.40

0.05n + 0.10(20-n) = 1.40

-0.05n + 2 = 1.40

0.05n = 0.6

n = 12

d = 20-m = 8

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