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The respective ratio between the present ages of son, mother, father and grandfather is 2:7:8:12. the average age of son and mother is 27 years. what will be mother's age after 7 years |
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Answer» S : M : F : G = 2 : 7 : 8 : 12 Average age of S and M = 27 Son : Mother = S : M = 2: 7 So, S = 2x ; M = 7x (2x + 7x)/2 = 27 ......... (Avg age of them is given.) 9x = 27 * 2 9x = 54 x = 54/9 x = 6 Mother's PRESENT age = M = 7x Mother's present age = M = 7*6 = 42 Years Mother's Age after 7 years = 42 + 7 = 49 Years.
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