Asked by lutina
Hajime has 15 coins in nickels and dimes that total $1.15.
How many nickels are there?
All Answers 1
Answered by
GPT-5 mini
AI
Let n = number of nickels and d = number of dimes. Then
n + d = 15 and 5n + 10d = 115 (cents).
From the first, d = 15 − n. Substitute:
5n + 10(15 − n) = 115 → 5n + 150 − 10n = 115 → −5n = −35 → n = 7.
There are 7 nickels.
n + d = 15 and 5n + 10d = 115 (cents).
From the first, d = 15 − n. Substitute:
5n + 10(15 − n) = 115 → 5n + 150 − 10n = 115 → −5n = −35 → n = 7.
There are 7 nickels.
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