Question

Answer jarur dena 〰〰〰〰〰〰 आपके लिये चुनौतीपूर्ण सवाल २४ घंटे में उत्तर दें। Total Marks 100 एक दादा एक बाप एक पोता तीनो की कुल उम्र 140 Years है। पोता जितना महीना का दादा उतना साल का पोता जितना दिन का बाप उतना सप्ताह का तो बताओ कौन कितने कितने साल का है ? Best Of Luck देखते हे अपने Group में Maths का बादशाह कौन है।

Answer 1

grandfather is 68 , father is 30 30 30

Answer 2

Solution :-

Let us assume that the age (in years) of Grand Father, Father and Son be 'x', 'y' and 'z' years.

Sum of their ages = 140 years.

Therefore,

x + y + z = 140 ................(1)

Son's age in months = Grand Father's age in years

z*12 = Grand Father's age

⇒ 12z = x

⇒ x = 12z ................(2)

Son's age in days = Father's age in weeks

⇒ 365*z/1 = Father's age*(365/7)

⇒ 365z/1 = y*(365/7)

⇒ 365z/1 = 365y/7

⇒ 365 and 365 cancelled.

⇒ z = y/7

⇒ y = 7z ..................(3)

Now, we have values of y = 7z and x = 12z

Now putting the value of x and y in equation (1), we get.

Equation (1) ⇒ x + y + z = 140

⇒ 12z + 7z + z = 140

⇒ 20z = 140

⇒ z = 140/20

⇒ z = 7

Now, putting the value of z = 7 in (2) and (3), we get.

Equation (2) ⇒ y = 7z 

⇒ y = 7*7

⇒ y = 49

Equation (3) ⇒ x = 12z

⇒ x = 12*7

⇒ x = 84

Hence, the age of Grand Father is 84 years, age of Father is 49 years and the age of Son is 7 years respectively.

Answer.