Does anyone know how to find the percentages of certain numbers?

15% of 160, 90% of 210, 110% of 210, 175% of 36





I want somebody to tell me the best they can not just give me the answers.Does anyone know how to find the percentages of certain numbers?
To find 15% of 160, you multiply .15 by 160, so you basically put a decimal after two digits from the right of the percent. It equals 24.


.90 times 210 equals 189


1.10 times 210 equals 231


1.75 times 36 equals 63Does anyone know how to find the percentages of certain numbers?
15% of 160 is the same as saying 15% times 160





15% is 15/100 so 15/100 * 160 = 24


90/100 * 210 = 189


110/100 * 210 = 231


175/100 * 36 = 63





Best of luck!
Take the percentage and turn it into a regular number:





15% = .15


90% = .9


110% = 1.10


175% = 1.75








And now just multiply that by the number you want the percentage of:





15% of 160


=


.15 * 160


=


24





I'll let you do the rest.
15% of 160, 90% of 210, 110% of 210, 175% of 36





There are lots of ways of doing this.





If you have to work it out in your head without a calcualtor...


15% of 160


first find 10% which is easy to do...


160 divided by 10 = 16 (just move the whole number 1 decimal place to the right)


10%=16


5%= half of 16


5%=8


16+8=24 so 15% of 160 is 24





using another example...


90% of 210





10% = 210 divided by 10


10% = 21


90% = 21 x 9


90% = 189


90% of 210 = 189





Another way of working it out....


In maths 'Of' means the exat same as 'times'


so 175% of 36 can be swapped as 175% x 36


175% as a decimal is 1.75 (100% = 1 whole and 75%=0.75)


so 1.75 x 36 can also give you the answer (a calculator is proberbly needed)


1.75 x 36 = 63


175% of 36 = 63





another example


110% of 210





110 = 1.1


210 x 1.1 = 231


110% of 210 = 231





Hope this makes sence lol
you can do it as a proportion.





is/of





if you no wat numbers you have, you can set it up according to that.





for example


15% of 160





x/160=15/100





cross multiply





100x=2400





divide by 100 on both sides





x=24
15% means multiply by 0.15


15% of 160 = 0.15 X 160 = 24





90% of 210 = 0.90 X 210 = 189





110 % of 210 = 1.10 X 210 = 231





175% of 36 = 1.75 X 36 = 63
15% of 160 is the equation


160 * 0.15





90% of 210 is the equation:


210 * 0.90





and so forth.

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