Respuesta :

Answer:

Michael has 84 nickels and 68 dimes in a jar.

Step-by-step explanation:

Let n = number of nickels

Let d = number of dimes

n + d = 152

5n + 10d = 1100

(5n + 10d = 1100)/5

 n + 2d = 220

- n + d = 152

       d = 68

n + 68 = 152

   - 68   -  68

       n  =  84

Michael has 84 nickels and 68 dimes in a jar.