Answer:
10 small bows; 8 large bows
Explanation:
Let x = number of small bows.
Let y = number of large bows.
x + y = 18;
3x + 5y = 70
-3x - 3y = -54
+ 3x + 5y = 70
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2y = 16
y = 8
x + y = 18
x + 8 = 18
x = 10
Answer: 10 small bows; 8 large bows