Question 585245
<br>Dear tutor ikleyn:<br>
What's wrong with being able to calculate quickly?!  In many of your responses to questions on this web site, you mock the writer by saying that by using a particular method you can get an answer in a few seconds.<br>
If you "scold" students for using slow methods when a faster method is possible, then why do you scold another tutor who offers a faster way to solve this kind of problem?<br>
Just because you can't understand how the method of alligation works doesn't mean it shouldn't be taught.<br>
The method of alligation is far more efficient than the traditional algebraic approach that you and most other people use.  In this problem, finding the answer is almost trivial:<br>
6% is 3 times as close to 7% as it is to 3%; therefore the mixture should contain 3 times as much of the 7% ingredient as it does of the 3% ingredient.