SOLUTION: need help Bobbys grandfather is 6 years older than 7 times bobbys age.the difference in their ages is 72years.how old is bobby and his grandfather
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Question 445649: need help Bobbys grandfather is 6 years older than 7 times bobbys age.the difference in their ages is 72years.how old is bobby and his grandfather Answer by stanbon(75887) (Show Source):
You can put this solution on YOUR website! Bobbys grandfather is 6 years older than 7 times bobbys age.the difference in their ages is 72years.how old is bobby and his grandfather
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Equations:
G = 7B+6
G - B = 72
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Substitute for "G" and solve for "B":
7B+6 - B = 72
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6B = 66
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B = 11 yrs old (Bobby's age now)
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Solve for "G":
G = 7B+6
G = 7*11+6 = 77+6 = 83 yrs old (Grandpa's age now)
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Cheers,
Stan H.
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