Question 971304
d = number of dimes
q = number of quarters


10d + 25q = 765
2q = 3d - 11 ----> 3d - 2q = 11


Multiply the first equation by 2 and the second equation by 25.


20d + 50q = 1530
75d - 50q = 275
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95d = 1805
d = 19


There are 19 dimes and 23 quarters.