Question 1151085
x dimes
40-x quarters
x*0.10+(40-x)*0.25=.10x+10-.25x=3.60
so -0.15x=-6.4
x=42 2/3 which is non-integer

There is no way 40 dimes alone can be less than $3.60, let alone dimes and quarters of any number, at least the way I interpret the question.