Karen has $0.90 in dimes, d, and nickels, n. She has
3 more dimes than nickels, Which equations
represent the system of equations needed to
determine how many nickels and dimes Karen has?

A. n + d =,90
n+3=d
C. n 43=d
05n * 100 = 90
B. d +3=n
n+d= .90
D. d *3=n
.05n * 100 = 90