jrodburns4 jrodburns4

15-04-2021
Mathematics

contestada

Sofia has 25 coins in nickels and dimes in her pocket for a total of $1.65. How many of each type of coin does she have?

Respuesta :

clarch19 clarch19

17-04-2021

Answer:

17 nickels

8 dimes

Step-by-step explanation:

n + d = 25

.05n + .10d = 1.65

use substitution: n = 25-d

.05(25-d) + .10d = 1.65

1.25 - .05d + .10d = 1.65

.05d = .40

d = 8 ∴ n = 17

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