Answer:
You save 5.6 dollars.
Step-by-step explanation:
10%
The way we can calculate 10% of a number is to simply move its decimal point down one.
So for instance, 56.00, we move it one decimal place down, getting us 5.60.
1%:
This works for 1% as well, except we move 2 decimal points down instead of 1.
Using these 2 we can very easily find any percent.
Want to find 17% of 99?
Well that sounds like some rotten long division :(.
Actually, though, this is quite easy.
10% of 99 would be 9.9
1% of 99 would be 0.99
To find 17%, just multiply 0.99 by 7.
This is 6.93, you can just make 0.99 1, multiply it by 7, then subtract 0.07 from it.
Add the 9.9 and 6.93 and you get 16.83.
I did this all in my head, and once you practice this, you could calculate this even quicker than with a calculator!
Hope this helps!
