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uranmaximum [27]
3 years ago
8

I have a mix of 12 nickels and dimes in my pocket. All together I have $1 . How many nickles and dimes do I have?

Mathematics
1 answer:
fenix001 [56]3 years ago
8 0

Answer:

Step-by-step explanation:

n + d = 12

0.05n + 0.1d = 1    ║ × ( - 10 )

n + d = 12 ..... <em>(1)</em>

- 0.5n - d = - 10 ..... <em>(2)</em>

<em>(1)</em> + <em>(2)</em>

0.5n = 2 ⇒ n = 4

d = 12 - 4 = 8

There are <em>4 nickels</em> and <em>8 dimes</em> in the pocket.

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