Answer:
98 small cups, and 57 large cups!
Explanation:
x+y = 155
1.25x+ 2.50y = 265
1.25x + 2.50 ( 155 - x) = 265
1.25x + 387.5 - 2.50x = 265
-1.25x = 265-387.5
-1.25x = -122.5
x=98; y = 57
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