SOLUTION: A jar contains n nickels and d dimes. There are 22 coins in the jar, and the total value of the coins is $1.50. How many nickels and how many dimes are in the jar?
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Question 1015813: A jar contains n nickels and d dimes. There are 22 coins in the jar, and the total value of the coins is $1.50. How many nickels and how many dimes are in the jar?
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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 $1.50. How many nickels and how many dimes are in the jar?
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n + d = 22, (1)
5n + 10d = 150. (2)
From (1), n = 22-d. Substitute it into (2):
5*(22-d) + 10d = 150.
110 - 5d + 10d = 150.
5d = 150 - 110 = 40.
d = = 8, n = 22 - 8 = 14.
