Question

The amount of water in the tank decreases by half every 5 minutes.
The tank has 1000 l of water at first.
How much water is left at the end of 15 minutes?
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Answer 1

Answer:

125 L

Step-by-step explanation:

For first 5 mins,

The volume of tank becomes 500L

For the next 5 mins,

The volume becomes 250 L

For the last 5 mins,

The volume becomes 125 L