Math
posted by Marcy .
Jessica has 9 more nickels than dimes, and the total value of her coins is 1.50. How many nickels does she have. Write the best equation.

d = n9
5 n + 10 d = 150 cents
5 n + 10(n9) = 150
15 n 90 = 150
15 n = 240
n = 16
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