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Michael is 4 times as old as Brandon

Michael is 27 years older than Brandon

Let Michael age =X  , Brandon age=Y

X=4×Y -------(1)

X=Y+27 -----(2)

By substituting (1)  in (2)

4Y=Y+27

3Y=27

Y=9 years.

Then X=4×Y=4×9=36 years =Michael age.

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