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A mother is twice as old as her son. If 20 years ago, the age of the mother was 10 times the age of the son, what is the present age of the mother? Question Posted on 26 Apr 2021 Home >> Quantitative Aptitude >> Average Aptitude >> A mother is twice as old as her son. If 20 years ago, the age of the mother was 10 times the age of the son, what is the present age of the mother? |
A mother is twice as old as her son. If 20 years ago, the age of the mother was 10 times the age of the son, what is the present age of the mother?
Choose the correct option from below list
(1)38 years
(2)40 years
(3)43 years
(4)45 years
Answer:-(4)45 years
Note:-Let assume son age is X years and Mother age is 2x as per question 20 years ago;
10 (X -20) = 2X - 20;
10X - 200 = 2X - 20;
10X - 2X= - 20 + 200;
8X = 180;
X=180/8= 22.5 years;
So age of mother = 22.5 * 2 = 45 years | |
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