D+n=25 subtract d from both sides *(if your wondering what d and n are it stands for Dimes and Nickels)* n=25-d 0.10d+0.05= 1.85 0.10d+0.05(25-d)= 1.85 0.10d+1.25-0.05d= 1.85 0.05d = 0.60 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ My answer: He has 12 dimes (d=12) and 25-12=13 so 13 nickels.. Hope this helps! :)
