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Answer:
16 : 48
Explanation:
let the 2 parts be x and 3x = x : 3x
sum the parts of the ratio , x + 3x = 4x
Then
4x = 64 ( divide both sides by 4 )
x = 16 and 3x = 3 × 16 = 48
the 2 parts are 16 and 48
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