A survey of India worker was taking the 2000 census in Behrampur distance of Orissa. It was a Wednesday in the second half of the year in the waxing moon phase right aftera major national festival. In one of the villages the worker intervewed a toothless old lady sitting in front of hut. The lady declared: My grand daughter is about as many days as my daughter is weeks, and my grand daughte is as many months as I am years. The three of us together are 140 years. The surveyor quickly took out her calculator and started punching in a few numbers to find the lady's age. Her calculator has a seven segment LCD displaye but she was puzzled to see the number so she did the calculations again, this time assuming 30 days in a month and 365 days in a year. This time the results were correct. Can you tell what did the calculator display showed, if you made the same assumptions?


a)85 years b)83 years c)84 years d)86 years


 


3 years ago

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Answers : (1)

                    

dear doppalapudi,


according to the conditions given in the question,


grand daughter's days= daughter's weeks


grand daughter's months = her years,


let x= age (in years) of old lady herself


y = age (in years) of her daughter


z= age (in years) of her grand daughter


therefore , x+y+z=140    (1)


365z=365/7 * y               (2)


12z=x                             (3)


solving the above three equations we get


x=84 years


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AMAN BANSAL

3 years ago

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