Subject
Bank Exam
Topic
পূবালী ব্যাংক লিমিটেড (প্রবেশনারী অফিসার) - ৩০.০৯.২০২৩
Ten years ago. A was half of B in age. If the ratio of their present age is 3 : 4 What will be the total of their present ages?
Ten years ago. A was half of B in age. If the ratio of their present age is 3 : 4 What will be the total of their present ages?
ক)
20 yearsখ)
30 yearsগ)
45 yearsঘ)
None of theseExplanation
let, Ten years ago, A was x years old B was 2x years old ATQ, (x + 10)/(2x + 10) = 3/4 ⇒ 4x + 40 = 6x = 30 ⇒ 6x - 4x = 40 - 30 ⇒ 2x = 10 ∴ x = 5 total present age = x + 2x + 20 = 3x + 20 = 3 × 5 + 20 = 35 yearsRelated questions
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