Question

Write and solve a system of equation for each problem?

A jar contains nickels and dimes. There is a total of 200 coins in the jar and their value is $14.55. How many dimes are in the jar?

Plz show the steps

Answer 1

There is 80 dimes in the jar

Answer 2

There are total of 80 dimes in the jar cuz...

n + d = 200 = n = 200 - d

0.05n + 0.1d = $14.00

0.05(200 - d) + 0.1d = $14.00

10 - 0.05d + 0.1d = $14.00

10 + 0.05d = $14.00

-10 -10

0.05d = $4.00

0.05d / 0.05 = $4.00 / 0.05

d = 80

Explanation:

hope this helps... *credit to merxinda*

have a good day