If I want to multiply with multiple percentage increases, I convert it to decimal and then calculate.
Example: 1 * 1.4 * 1.2 = 1.68
Now, I came across someone on reddit who calculates it the following way:
1 + 40% + 20%
Which started an argument with different people, saying the second way is false, taking google as an example. If you put this into google, it says the result is 1.6. If you put it into wolfram alpha, it adds brackets and calculates it correctly.
The redditor argues it's a computational issue. And I'm starting to wonder if he is right or if google is right.
Would
1 + 40% + 20% = 1 + 60% = 1.6
or
= 1.68
Common sense tells me, the redditor is right, but then I think "google is big and they know their shit". I'm asking this because I'm curious, not because I want to prove someone wrong. And sorry if this lacks the proper formatting, I don't have a background in maths.