Ten years ago, A was half of B in age. If the ratio of their present ages is 3:4, then what will be the total of their present ages?
বিকল্পসমূহ (নিজের উত্তর যাচাই করতে ক্লিক করুন):
সঠিক উত্তর
1 (35 years)
বিস্তারিত ব্যাখ্যা ও বিশ্লেষণ:
Let A’s age 10 years ago be = x years
Then, B’s age 10 years ago = 2x years
ATQ, (x + 10) / (2x + 10) = 3/4
Or, 6x + 30 = 4x + 40
Or, x = 5
So, the total of their present ages = (x + 10 + 2x + 10)
= (5 + 10 + 2.5 + 10)
= 35 years.
