alleryA மற்றும் B-ன் வயதுகள் 5 : 3 என்ற விகிதத்தில் உள்ளன. 9 ஆண்டுகளில் இந்த விகிதம் 3 : 2 ஆக மாறுகிறது. A-ன் தற்போதைய வயது
A30
B27
C36
D45
Answer & Solution
Correct answer: D. 45
(5x + 9)/(3x + 9) = 3/2 என்பதைத் தீர்க்கும்போது x = 9 கிடைக்கிறது, எனவே A-ன் வயது 5 x 9 = 45.
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