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? (Create a system of equations and solve that system)

Step-by-step explanation:

n + d = 12

0.05n + 0.1d = 1    ║ × ( - 10 )

n + d = 12 (1)

- 0.5n - d = - 10 (2)

(1) + (2)

0.5n = 2 ⇒ n = 4

d = 12 - 4 = 8

There are 4 nickels and 8 dimes in the pocket.

sinn is the total amount of students now and m were the students before, you subtract them both (n-m) and divide that by m. then, since to get a percentage from a fraction you have to multiply by 100, your answer should look like this: n-m/m*100

step-by-step explanation:

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step-by-step explanation:

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