Question 1175926
d = number of dimes
n = number of nickels


d + n = 26 (eqn 1)
10d + 5n = 210 (eqn 2)


Multiply equation 1 by 10.


10d + 10n = 260
10d + 5n = 210


Subtract the two to get 5n = 50. So, there are 10 nickels and 16 dimes in the purse.