Question 222891
ken is 1 year less than twice as old as his sister. if the sume of their ages is 14 years, how old is ken?


Let Ken's sister's age be S


Since Ken is 1 year less than twice his sister's age, then Ken's age is 2S - 1


Since the sum of their ages is 14, then we'll have:


S + 2S - 1 = 14


3S = 15


S = 5


Since Ken's sister is 5 years old, then Ken is {{{highlight_green(9)}}} 2(5) - 1) years-old.