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If Michael were six years older, he would be four times as old as Isaac. Isaac is 39 years younger than Michael. How old is Michael?

 Feb 18, 2020
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Michael = x.

Isaac = x-39.

 

x + 6 = 4 (x - 39) 

 

x + 6 = 4x - 156

 

x - 4x  = - 156 - 6

 

-3x = -162

 

3x = 162

 

x = 54.

 

Michael is 54 years old.

 

 54 - 39  = 15.

 

54 + 6 = 60

 

15 * 4 = 60

 Feb 18, 2020

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