Sabina got married 8 years ago. Today her age is 9/7 times her age at the time of her marriage. At present her daughter‘s age is one-sixth of her age. What was her daughter’s age 3 years ago?
বিকল্পসমূহ (নিজের উত্তর যাচাই করতে ক্লিক করুন):
সঠিক উত্তর
1 (3 years)
বিস্তারিত ব্যাখ্যা ও বিশ্লেষণ:
Solution:
Let, Sabina's age 8 years ago be x years.
Then, her present age = (x + 8) years.
according to the question,
x + 8 = (9/7) . x
⇒ 7x + 56 = 9x
⇒ 2x = 56
⇒ x = 28
∴ Sabina’s age now = (x + 8) years = (28 + 8) = 36 years.
Her daughter’s age now = (1/6) × 36 years = 6 years.
Her daughter’s age 3 years ago = (6 – 3) = 3 years.
