Im a little dumber than usual so please I apologize , maybe you can explain it to me like I’m 15 but not more than that lol.
so let say something is $300 a month but they give you a 5% off if you prepay for 6 months or 10% if you prepay for 12 months. I thought of being smart and prepaying the 6 months twice to get the 5% off twice but it’s still not adding up.
My Math.
6 Month
$300 x 6 months = $1800
5 % discount = $90
Total 6 month after discount = $1710
Paying $1710 twice = $3420 for the year
———————————————————————————————————
12 Month $300 x 12 months = $3600 10 % discount = $360 Total 12 month after discount = $3240
WTF !
Edit: I got it. So basically , percentages dont really add to 10 % . You’re still getting 5% off over 12 months. I guess thats a marketing tactic for stupid people like me.
Thanks everyone.
Special thanks to u/The_Aesthetician for asking to break it down over the months. That helped me see it.
Also to u/casualstrawberry for explaining the first one youre basically getting 5% off 12 months even if you paid by 6.
I kept seeing small models that use gravity to move, and while I understand that after a certain time it will end stopping due to fraction.
What i don't understand is why we don't do those models in a large scales and attache an engine that help compensating the slow down because of the fraction.
And maybe build those engine in places with a minimum air possible.
I'm not an engineer, and i know that if it could work we will do it already, but again it feels kinda off.
Edit : While I was aware of hydropower energy, i learned way more about it by reading the comments,thanks.
but i should've put an example of the models I was talking about. I couldn't find the original ones I saw before but i did a quick youtube search and it was something similar to this : https://youtu.be/ePH6vkqAeB4?si=-L_f8FzFdQjT36eC