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Class 12 Tuition > Learn Mathematical Reasoning > 4My grandson is about as many days as my daughter in...
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4My grandson is about as many days as my daughter in weeks, and my grandson is as many months as I am in years. My grandson, my daughter and I together are 120 years. Can you tell me my age in years ?

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Let my age is M, son's age is S, and grandson's age is G. Given:- My grandson is as many months as I am in a year. So, M = 12G..........(1) And, my grandson is about as many days as my son is weeks. So, S = 7G...........(2) It's is given that sum of all thee ages is 120. So M + G + S = 120........(3) By...
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Let my age is M, son's age is S, and grandson's age is G. Given:- My grandson is as many months as I am in a year. So, M = 12G..........(1) And, my grandson is about as many days as my son is weeks. So, S = 7G...........(2) It's is given that sum of all thee ages is 120. So M + G + S = 120........(3) By solving equations 1, 2 and 3, we will get G = 6year, S= 42 years and M = 72 years. Hope you got it...!!! read less
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Assuming x,y, and zx,y, and z are the ages of your grandson, your son, and you respectively, expressed in years, then your system is: 365x=52y365x=52y 12x=z12x=z x+y+z=120x+y+z=120 Therefore x=6x=6, y=42y=42 and z=72
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Assuming x,y,andzx,y,andz are the ages of your grandson, your son, and you respectively, expressed in years, then your system is: 365x=52y365x=52y 12x=z12x=z x+y+z=120x+y+z=120 Therefore x=6x=6, y=42y=42 and z=72 read less
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Let my age be. x years My grandson's age. = x months = x/12 years=. (x/12).365 days My daughter's age. =(x/12).365 weeks =(x/12).365.7 days =/365 years ...
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Let my age be. x years My grandson's age. = x months = x/12 years=. (x/12).365 days My daughter's age. =(x/12).365 weeks =(x/12).365.7 days =[(x/12).365.7]/365 years = 7x/12 years Now, Grandson +. Daughter + my age = 120 x + (x/12) + (7x/12) = 120 x. =. 72 read less
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Lets consider my age be x years. Then grandson's age. = x months = x/12 years=. (x/12).365 days Funally daughter's age. =(x/12).365 weeks =(x/12).365.7 days =/365 years ...
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Lets consider my age be x years. Then grandson's age. = x months = x/12 years=. (x/12).365 days Funally daughter's age. =(x/12).365 weeks =(x/12).365.7 days =[(x/12).365.7]/365 years = 7x/12 years Now- Grandson + Daughter + my age = 120byrs x + (x/12) + (7x/12) = 120 x. = 72 yrs read less
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