Answer:
y = 7
Explanation:
being similar we can solve with an equation between the corresponding sides
1 : 3.5 = y : 24.5
y = 1 x 24.5 : 3.5
y = 24.5 : 3.5
y = 7
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check
1 : 3.5 = 7 : 24.5
0.28 = 0.28
same value the answer is good