Multiple choice

If 10 litres of water is removed from a container and replaced with wine, the ratio of water to wine is 5 : 2. How much water was there originally?

  1. 35 litre

  2. 25 litre

  3. 20 litre

  4. 15 litre
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

If original water was W, after removing 10L: W-10 water, 10 wine added. Ratio (W-10):10 = 5:2. So (W-10)/10 = 5/2, W-10 = 25, W = 35. Original water was 35 litres. Option B (25) is the water after removal, not original. Option C (20) comes from mis-solving the ratio.

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