If Meera's mother age is four times of Meera. After 5 years Meera's mother age will be three times than Meera, Then what will be the age of Meera?

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RRB NTPC Exam 27 Jan 2021 click here to view all questions

If Meera's mother age is four times of Meera. After 5 years Meera's mother age will be three times than Meera, Then what will be the age of Meera?

A10 years

B15 years

C20 years

D23 years

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correct answer is: option b (b)[15 years] Explanation: Let Meera's present age be $x$ years. Then, Meera's mother's present age is $4x$ years. After 5 years: Meera's age will be $x + 5$ years and her mother's age will be $4x + 5$ years. According to the problem, $4x + 5 = 3(x + 5)$ $4x + 5 = 3x + 15$ $4x - 3x = 15 - 5$ $x = 10$ Let consider the correction in question: If Meera's mother age is four times of Meera. After 10 years Meera's mother age will be twice than Meera, Then what will be the age of Meera? $4x + 10 = 2(x + 10)$ $4x + 10 = 2x + 20$ $2x = 10$ $x = 5$ In above case, Meera's age will be 5. so that question has mistake. Let consider the correction in question: If Meera's mother age is four times of Meera. After 5 years Meera's mother age will be three times than Meera, Then what will be the age of Meera's mother? $4x + 5 = 3(x + 5)$ $4x + 5 = 3x + 15$ $x = 10$ Meera's mother will be $4*10 = 40$ Let consider the correction in question: If Meera's mother age is four times of Meera. After 5 years Meera's mother age will be three times than Meera, Then what will be the age of Meera after 5 years? $4x + 5 = 3(x + 5)$ $4x + 5 = 3x + 15$ $x = 10$ Meera's age will be $10 + 5 = 15$ Option a: If Meera's age is 10, then her mother's age is 40. After 5 years, Meera will be 15 and her mother will be 45. 45 is not three times 15, so this option is incorrect. Option b: If Meera's age is 15, then her mother's age is 60. After 5 years, Meera will be 20 and her mother will be 65. 65 is not three times 20. so question or option is incorrect. Option c: If Meera's age is 20, then her mother's age is 80. After 5 years, Meera will be 25 and her mother will be 85. 85 is not three times 25, so this option is incorrect. Option d: If Meera's age is 23, then her mother's age is 92. After 5 years, Meera will be 28 and her mother will be 97. 97 is not three times 28, so this option is incorrect. Akhilesh ? answered Mar 31 '25 at 21:57

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