A vessel contains $100$ litres of spirit. If $10$ litres are removed and replaced with water, and this process is repeated three times in total, the spirit left is:
Practice this question from Chapter Mock 10: Mixture and Alligation, with options and an explanation.
Question
A vessel contains $100$ litres of spirit. If $10$ litres are removed and replaced with water, and this process is repeated three times in total, the spirit left is:
Option A
70.0 litres
Option B — Correct answer
72.9 litres
Correct choice.
Option C
75.6 litres
Option D
81.0 litres
Explanation
Spirit left $=100\left(\frac{9}{10}\right)^3=72.9$ litres.