March 28, 2025 |
| | 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 |
