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admin
01-17-2010, 10:11 AM
Grandpa:

"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 120 years. Can you tell me my age in years...?"


http://www.nidokidos.org/userpix/2_Winter4aa_1.jpg

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admin
01-17-2010, 10:12 AM
ANSWER :

72 Years...

Solution:

Grandpa:

"This problem is conveniently solved by writing down the necessary equations. Note that there are 12 months in a year, 52 weeks in a year, and 365 days in a year.

Let m be my age in years. If s is my son's age in years, then my son is 52s weeks old. If g is my grandson's age in years, then my grandson is 365g days old. Thus,

365g = 52s.

Since my grandson is 12g months old,

12g = m.

Since my grandson, my son and I together are 120 years,

g + s + m = 120.

The above system of 3 equations in 3 unknowns (g, s and m) can be solved as follows.

m / 12 + 365 m / (52 12) + m = 120 or

52 m + 365 m + 624 m = 624 120 or

m = 624 120 / 1041 = 72.

So, I am 72 years old."

sveetzara
01-17-2010, 11:22 AM
lo ji aap ney khudi answer bta dia... w8 to ker letey...

admin
01-17-2010, 11:38 AM
janab actually ye group per bheija jata hai , wo answer k liay yahan iss page per atay hein :)

sveetzara
01-17-2010, 11:39 AM
:thinking2: acha...

sohaib
01-17-2010, 04:02 PM
yah kia .....i had calculated it..but aap ne khud hi answer de dia

admin
01-17-2010, 08:51 PM
yah kia .....i had calculated it..but aap ne khud hi answer de dia

haan to sohaid , tumhein confirm ho gaya na iss terha :)

tania azim
01-17-2010, 09:18 PM
ohhh.....ans to hai yeha....but my calculation is wrong... :(

Javid_mosafir
01-17-2010, 09:28 PM
good quest and smart solution

sohaib
01-17-2010, 09:38 PM
ya thnkz admin bro....btw itz SOHAIB...:)

admin
01-17-2010, 09:41 PM
ok sohaib

sabercool
01-17-2010, 10:49 PM
nice and tough puzzle..............