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Ria, Ram and Pooja scored total 74 marks. Ria:Pooja = 4:5. Pooja:Ram = 3:2. Find Ram's marks.

1. 30
2. 20
3. 24
4. 28

Correct answer: 20

Solution

Scale Ria:Pooja=4:5→12:15. Scale Pooja:Ram=3:2→15:10. Ratio=12:15:10, total=37 parts=74 marks. 1 part=2. Ram=10×2=20 marks.

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