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r-ruslan [8.4K]
3 years ago
12

Paul has a collection of nickels and

Mathematics
1 answer:
VARVARA [1.3K]3 years ago
4 0

Answer:

#nickels = 50

#dimes = 100

Step-by-step explanation:

system of equations:

n + d = 150

.05n + .10d = 12.50

let n = '150 - d' and substitute this into the second equation

.05(150-d) + .10d = 12.5

7.5 - .05d + .10d = 12.5

.05d = 5

d = 5/.05

d = 100

n = 50

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