Question 256233
"A man has 14 coins" ___ d + q = 14 ___ 10d + 10q = 140


"the total value of his change is $2.75" ___ 10d + 25q = 275


subtracting eqns ___ 15q = 135 ___ q = 9


substituting ___ d + 9 = 14 ___ d = 5