SOLUTION: Mary is 4 years older than John. Mr Smith is 5 times as old as John. If John is x years old how old is a Mary b Mr Smith? If the sum of the three ages is 60 years find how old John
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-> SOLUTION: Mary is 4 years older than John. Mr Smith is 5 times as old as John. If John is x years old how old is a Mary b Mr Smith? If the sum of the three ages is 60 years find how old John
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Question 87070: Mary is 4 years older than John. Mr Smith is 5 times as old as John. If John is x years old how old is a Mary b Mr Smith? If the sum of the three ages is 60 years find how old John is. Answer by stanbon(75887) (Show Source):
You can put this solution on YOUR website! Mary is 4 years older than John.
Let John's age be J
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Mary's age is J+4
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Mr Smith is 5 times as old as John.
Mr. Smith is 5J
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If John is x years old how old is
a) Mary?
She is x+4
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b Mr Smith?
He is 5x
If the sum of the three ages is 60 years find how old is John ?
EQUATION:
x + (x+4) + 5x = 60
7x+4=60
7x = 56
x = 8 yrs old (John's) age
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Cheers,
Stan H.
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