Multiple choice

A cask containing $425$ litres lost $8\%$ by leakage and evaporation. The number of litres left in the case were:

  1. $\displaystyle\frac{425\,\times\, 8}{100}$
  2. $425\, -\, \displaystyle\frac{425\,\times\, 8}{100}$
  3. $425\, +\, \displaystyle\frac{425\,\times\, 8}{100}$
  4. $425\, \times \, \displaystyle\frac{425\,\times\, 8}{100}$
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B Correct answer
Explanation

If a quantity loses 8%, the remaining amount is 100% - 8% = 92% of the original. This is calculated as 425 - (8% of 425), which is 425 - (425 * 8 / 100).

AI explanation

The total initial volume is 425 litres and the loss is 8 percent due to leakage and evaporation. The remaining volume equals the initial volume minus the lost volume. Therefore, the litres left are represented by the formula 425 minus (425 multiplied by 8 divided by 100).

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