Question 837488: In 26 years marnie will be three times her present age. How many years old is she now?
Answer by josh_jordan(263)   (Show Source):
You can put this solution on YOUR website! To solve, we need to set this word problem up as an equation. In 26 years, Marnie will be three times her present age. Let's use "m" as her present age. "In 26 years, Marnie will be" can be written as "26 + m =" and "three times her present age" can be written as 3m. When combined, we have:
26 + m = 3m
We want to isolate 26 from the rest of the equation. To do this, we can subtract m from both sides of the equation, giving us:
26 = 3m - m
Combining like terms gives us:
26 = 2m
To find Marnie's age (m), we want to get the m all by itself on the right side of our equal sign. To do this, we can divide both sides of the equation by 2, giving us:
13 = m
Therefore, Marnie is currently 13 years old.
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