SOLUTION: How do I manually work out the percentage of something : eg. 18 students out of 25 is 72% - how do I work this out without using a calculator. Thank you kindly, Susan

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Question 275012: How do I manually work out the percentage of something : eg. 18 students out of 25 is 72% - how do I work this out without using a calculator. Thank you kindly, Susan
Found 2 solutions by ankor@dixie-net.com, Alan3354:
Answer by ankor@dixie-net.com(15649) (Show Source):
You can put this solution on YOUR website!
How do I manually work out the percentage of something : eg. 18 students out of 25 is 72% - how do I work this out without using a calculator. Thank you kindly, Susan
:
Use old fashioned long division would be
:
____.72 * 100 to get the per cent
25|18.00

Answer by Alan3354(30993) (Show Source):
You can put this solution on YOUR website!
18/25 = p/100
Multiply NUM and DEN by 4
72/100 = p/100
p = 72 --> 72%