Rina is now three times as old as Tuhin. Four years ago, she was five times as old as Tuhin was. How old is Rina now?
বিকল্পসমূহ (নিজের উত্তর যাচাই করতে ক্লিক করুন):
সঠিক উত্তর
3 (24 years)
বিস্তারিত ব্যাখ্যা ও বিশ্লেষণ:
Solution:
Let,
Tuhin's present age = x years
∴ Rina's present age = 3x years
ATQ,
3x - 4 = 5(x - 4)
⇒ 5x - 20 = 3x - 4
⇒ 5x - 3x = 20 - 4
⇒ 2x = 16
∴ x = 8
So Rina's present age = (3 × 8) = 24 years
