SOLUTION: Two sisters are presently 2 years old and 12 years old. How many years will have to pass before the elder sister is 1 1/2 times the age of the younger sister?
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Question 1174972: Two sisters are presently 2 years old and 12 years old. How many years will have to pass before the elder sister is 1 1/2 times the age of the younger sister? Answer by ikleyn(52884) (Show Source):
x years later
12 + x = 1.5*(2 + x)
It is your basic equation.
Simplify and solve it
12 + x = 3 + 1.5x
12 - 3 = 1.5x - x
9 = 0.5x
x = = 18.
ANSWER. 18 years later.
