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Grandpa said "My grandson is about as many days as my son is weeks, and my grandson is as many months as I am in years. My grandson, my son and I together are 100 years. Can you tell me my age in years?”

PS: This is NOT homework!

2006-09-15 08:30:45 · 8 answers · asked by Anonymous in Education & Reference Words & Wordplay

8 answers

Grandpa = A, Son = B, and Grandson = C

C = A / 12 (Grandson is as many months as Grandpa is in years)

C = B / 7 (Grandson is as many days as son is in weeks)

A + B + C = 100

A/12=B/7...12B=7A...12B/7 + B + B/7 = 100...20B/7=100

B = 35
C = B/7...35/7...5
A = 100 - 35 - 5 = 60

Grandpa is 60, Son is 35, and Grandson is 5.

2006-09-15 08:38:16 · answer #1 · answered by Anonymous · 0 0

60 years old
the grandson is 5 years old (1825 days, 60 months)
the son is 1825 weeks (35 years old)
the speaker/grandpa is 60 years old(the same amount of months the grandson is)
5+35+60 =100

2006-09-15 15:40:10 · answer #2 · answered by orangeman315 3 · 0 0

20

2006-09-15 15:50:07 · answer #3 · answered by shsimon 2 · 0 0

Math has never been my strong suit, but I can't resist a challenge like this. I think you are 60 years old.

2006-09-15 15:52:58 · answer #4 · answered by ltsaunders 1 · 0 0

60 years old
Son is 35
Grandson is 5

2006-09-15 15:38:41 · answer #5 · answered by tmeineke7 2 · 0 0

Oh, I thought you said "ears"

2006-09-15 15:38:12 · answer #6 · answered by Wayne A 5 · 0 0

this is only sort of related to your question, but check this out:

http://www.paulsadowski.org/BirthDay.asp

2006-09-15 15:38:49 · answer #7 · answered by jarm 4 · 0 0

60 (huh???)???

2006-09-16 04:51:02 · answer #8 · answered by Ash 2 · 0 0

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