SOLUTION: Denise's age is one year less than twice the age of her brother. If the difference of their ages is more than 4, what can you conclude about Denise's age?

Question 633946: Denise's age is one year less than twice the age of her brother. If the difference of their ages is more than 4, what can you conclude about Denise's age?
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
Denise's age is one year less than twice the age of her brother. If the difference of their ages is more than 4, what can you conclude about Denise's age?
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Equations:
d = 2b-1
d - b > 4
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Substitute for "b" and solve for "d":
d - [d+1)/2 > 4
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d - (d/2) - (1/2) > 4
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(d/2) > 9/2
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Denise's age > 9
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Cheers,
Stan H.
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