- #1
shadowboy13
- 20
- 0
If you are having difficulty figuring out the percentage of an item and don't have a calculator, you may utilize this trick (which i still don't know how it came to be in my mind).
Let: ##a## be a fractional number (percentage) and ##b## a whole number.
If you make ##a## be a whole number as well,then:
##a\times b####=####ab##
Then proceed to divide the product ##ab## by 100: ##ab/100####=####n##
where n is the percentage of said item.
Example: What is 16% of 24.31$ ?
##16 \times 24##=##384##
##384/100####=####3.84##
Now: ##16\times31##=##496##
##496/100####=####4.96##
##4.96/100####=####0.0496##
##3.84+0.0496####=####3.8896##
Which can be approximated to: ##\approx 3.89##
Hope i can help people with this :)
Let: ##a## be a fractional number (percentage) and ##b## a whole number.
If you make ##a## be a whole number as well,then:
##a\times b####=####ab##
Then proceed to divide the product ##ab## by 100: ##ab/100####=####n##
where n is the percentage of said item.
Example: What is 16% of 24.31$ ?
##16 \times 24##=##384##
##384/100####=####3.84##
Now: ##16\times31##=##496##
##496/100####=####4.96##
##4.96/100####=####0.0496##
##3.84+0.0496####=####3.8896##
Which can be approximated to: ##\approx 3.89##
Hope i can help people with this :)