Subject
Quantitative Aptitude
Topic
Ratio
The present ages of A and B are in the ratio 6:4. Five years ago their ages were in the ratio 5:3. How old is A now?
The present ages of A and B are in the ratio 6:4. Five years ago their ages were in the ratio 5:3. How old is A now?
ক)
42খ)
36গ)
30ঘ)
24Explanation
বর্তমান বয়স, A=6x এবং B=4x প্রশ্নমতে, (6x-5)/(4x-5) = 5/3 ⇒ 20x-25 = 18x-15 ⇒ 2x = 10 ∴ x = 5 ∴ বর্তমানে A এর বয়স = 6x = 6*5 = 30 বছরRelated questions
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