A 220-liter barrel has a small leak. It lost 10% of its contents before anyone noticed. How many liters are left in the barrel?
Please answer and provide answer explanation.
198
The barrel lost 220 * 10 / 100 = 22 liters before anyone noticed.

So, 220 – 22 = 198 liters are left in the barrel.

.

Final answer: 198