Gulzar is four times as old as Hashem. 10 years ago, Gulzar was 9 times as old as Hashem. What will be the sum of their ages after 6 years?
বিকল্পসমূহ (নিজের উত্তর যাচাই করতে ক্লিক করুন):
সঠিক উত্তর
ক (92)
বিস্তারিত ব্যাখ্যা ও বিশ্লেষণ:
Solution:
Let,
The present age of Hashem is x years
∴ The present age of Gulzar is 4x years
ATQ,
4x - 10 = 9(x - 10)
⇒ 4x - 10 = 9x - 90
⇒ 5x = 80
∴ x = 16
Hashem's age after 6 years = x + 6 = 16 + 6 = 22 years
Gulzar's age after 6 years = 4x + 6 = 4 × 16 + 6 = 64 + 6 = 70 years
∴ The sum of their ages after 6 years = 70 + 22 = 92 years
