InterviewSolution
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InterviewSolution
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One Grand Father Has 3 Grand Children Two Of The Age Difference Is 3.eldest Child Age Is 3 Times The Youngest Childs Age And The Eldest Child Age Is Two Year More Than The Sum Of Other Two Children. Find What Is The Age Of The Elders Child ? |
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Answer» LET the age of ELDEST child is E , that of elder child is M and that of youngest child is Y, then according to the given conditions E = 3Y (1) and E = 2 + M + Y (2) THIRD condition is somewhat complicated, according to this condition two of the age difference is 3 so three cases will arise 1) E - M = 3, ......(3) 2) M - Y = 3, ......(4) 3) E - Y = 3, ......(5) if we take first of the 3 conditions then on solving (1), (2) and (3) we will get E = 3, M = 0, Y = 1 which is wrong now on solving (1), (2) and (4) we will get E = 15, M = 8, Y = 5 similarity on solving (1), (2) and (5) we will get E = 4.5, M = 1, Y = 1.5 only E = 15, M = 8, Y = 5 is correct so age of elder child is 8 years. Let the age of eldest child is E , that of elder child is M and that of youngest child is Y, then according to the given conditions E = 3Y (1) and E = 2 + M + Y (2) Third condition is somewhat complicated, according to this condition two of the age difference is 3 so three cases will arise 1) E - M = 3, ......(3) 2) M - Y = 3, ......(4) 3) E - Y = 3, ......(5) if we take first of the 3 conditions then on solving (1), (2) and (3) we will get E = 3, M = 0, Y = 1 which is wrong now on solving (1), (2) and (4) we will get E = 15, M = 8, Y = 5 similarity on solving (1), (2) and (5) we will get E = 4.5, M = 1, Y = 1.5 only E = 15, M = 8, Y = 5 is correct so age of elder child is 8 years. |
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