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Actually, 10.5
If Molly is in her seventeenth year, her age is sixteen (as you are in your first year of life for a year before you have your first birthday). Therefore she is nine plus seven, sixteen, Zachary is seven over two, three and a half, and Thomas is ten and a half.
I like all of the attempts, but the correct solution is : There is not enough information to solve the problem. Mostly because although we know that Thomas is three years older than Zachery and Zachary’s age is (Molly-9)/2, the closest we can get to solving the problem is figuring out Zachary’s age (3.5 years), but as Zachary has no relationship given to Thomas’s age (only this other person named Zachery does) we cannot solve for Thomas’s age.
Okay you’re all wrong except Chris.
The word problem has a total of FOUR people in it, not three.
Thomas’s age(x) is equal to ZachEry’s age(y), which is abritrary, times 3
Molly’s age(a) is ZachAry’s age(b) times 2, plus 9.
You cannot say x=(a-9)/2*3. The equations given are:
x=y3
a=b2+9
September 7th, 2007 at 11:44 am
12!
April 26th, 2008 at 12:20 pm
Exactly two minutes later, a student had the first headache ever.
July 3rd, 2008 at 8:11 pm
And thus, he became the most hated person in math history… Or at least in the eyes of students.
July 15th, 2008 at 9:50 pm
I’ve seen a cuneiform word problem in my math book. but still funny.
October 11th, 2009 at 4:27 am
Actually, 10.5
If Molly is in her seventeenth year, her age is sixteen (as you are in your first year of life for a year before you have your first birthday). Therefore she is nine plus seven, sixteen, Zachary is seven over two, three and a half, and Thomas is ten and a half.
April 24th, 2010 at 8:49 pm
I like all of the attempts, but the correct solution is : There is not enough information to solve the problem. Mostly because although we know that Thomas is three years older than Zachery and Zachary’s age is (Molly-9)/2, the closest we can get to solving the problem is figuring out Zachary’s age (3.5 years), but as Zachary has no relationship given to Thomas’s age (only this other person named Zachery does) we cannot solve for Thomas’s age.
May 25th, 2010 at 3:01 pm
It says in the first sentence that Thomas is three times as old as Zachary. Therefore, Thomas is 10.5.
September 7th, 2010 at 1:30 pm
Thomas is 9
September 8th, 2010 at 9:45 pm
Okay you’re all wrong except Chris.
The word problem has a total of FOUR people in it, not three.
Thomas’s age(x) is equal to ZachEry’s age(y), which is abritrary, times 3
Molly’s age(a) is ZachAry’s age(b) times 2, plus 9.
You cannot say x=(a-9)/2*3. The equations given are:
x=y3
a=b2+9
The equations do not relate. Good work Chris.