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A jar contains n nickels and d dimes. There are 22 coins in the jar, and the total value of the coins is $1.60. How many nickels and how many dimes are in the jar?

 Sep 21, 2021
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A jar contains n nickels and d dimes. There are 22 coins in the jar, and the total value of the coins is $1.60. How many nickels and how many dimes are in the jar?

 

n  +  d ==22........................................(1)

0.05n  +  0.10d ==1.60......................(2), solve for d, n

 

Use substitution to get:

 

d==10 dimes    and  n==12 nickels.

 Sep 21, 2021

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