A father is 61 and his son is 16. In how many years will the father be twice as old as his son?
বিকল্পসমূহ (নিজের উত্তর যাচাই করতে ক্লিক করুন):
সঠিক উত্তর
3 (29)
বিস্তারিত ব্যাখ্যা ও বিশ্লেষণ:
Solution:
Let, in x years the father will be twice as old as his son.
61 + x = 2 (16 + x)
⇒ 61 + x = 32 + 2x
⇒ 2x - x = 61 - 32
⇒ x = 29 years
