Problem 281. Acid and water

Created by AMITAVA BISWAS

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Assume that there is a 100 liter tank.

It is initially filled with just distilled water.

It is continuously drained at R liters per minute.

This tank is always maintained full and homogeneous by continuously adding and stirring R liters per minute of an unknown acid (or some fancy oil if it helps you solving this problem).

How many liters W of water will be in the tank after M minutes?

Neglect any expansion or contraction when the acid is mixed with water.

Solve

Solution Stats

Last solution submitted on Oct 18, 2019

Last 200 Solutions

Problem Comments

4 Comments

4 Comments

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PeterB on 17 Oct 2017

It makes no sense to speak of the mixture being part acid and part water. In fact the quantity of water is always 100, and the acid has a certain strength. It would have been better to get us to calculate the acid strength

Stephen Cohen on 19 Oct 2017

Needs more test cases to disqualify the non-solutions that simply exploit the test-case space.

David Verrelli on 31 Oct 2017

More test cases in the Test Suite is generally welcome, and also the threat of potentially adding (even) more cases in the future can deter hard-coded "non-solutions".

li haitao on 29 Oct 2018

Most the leading solutions are just overfit the test cases, and meaningless.

Solution Comments

Solution 1710990

1 Comment

1 Comment

Vaibhav Gupta on 21 Jan 2019

Test 1 fails if the value is equal to result.
@Creator - Check the test suite

Solution 1310588

1 Comment

1 Comment

SUBROTA HALDER on 1 Nov 2017

Nice Problem

Solution 1309283

1 Comment

1 Comment

Ivan on 10 Nov 2017

what does it mean? how?

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