Answer:
2:5
Explanation:
a/2 = b/5
5a = 2b
a/b = 2/5
a:b = 2:5
a:b
Divide each side by b
a/2b = b/5b
Multiply each side by 2
2a/2b =2b/5b
The ratio of a to b ( or a/b) is 2/5
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