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09292009  #1 
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algebra inequality help
Ike’s age is three years more than twice his younger brother’s age. If the sum of their ages is at most 18, then find:
(a) the greatest age that Ike’s brother could be. (b) an inequality that represents all possible values of Ike’s age (allowing for fractional years), given that his younger brother is at least 2 years old. 
09302009  #2  
Join Date: Mar 2005
Posts: 10,609

Quote:
Let i = Ike's age and y = Younger brother's age. i = 2y + 3 If the sum of their ages is at most 18 then: y + 2y + 3 < 18 Solving the inequality: y + 2y + 3 < 18 3y + 3 < 18 3y < 15 y < 5 Ike's brother is at most 5 years old.
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03062010  #3 
Join Date: Feb 2010
Posts: 388

Ike's brother equals 5 year old. Well, To 56 Years, Old.
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