Father's age is three years more than three times the son's
age. After three years, father's age will be ten years more
than twice the son's age.
What is the father's present age?
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Answer Posted / kelley w.
Oh my gosh. It's really not that hard. Let me spell it out
for you...
Let's assume the father's current age is "f" and the son's
current age is "s".
f=3s+3 [Father's age is 3 times the Son's age
and 3 more years]
3+f=3+2s+10 [In 3 years, father's age will be twice
the son's age plus 10 more years]
3+(3s+3)=2s+13 [The Transitive Property of Equality
allows us to subsitute "3s+3" for "f"]
s=7 [By subtracting 6 and 2s from each
side, you are left with "s=7"]
therefore, f=24. [By plugging in "7" for "s" in our
original equation, we see that f=24.]
I don't understand why everyone is getting these ridiculous
answers, so I explained my answer in as much detail as I
deemed necessary. It's really not that hard guys.
| Is This Answer Correct ? | 4 Yes | 11 No |
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