Percentages -- having trouble understanding how to take a percentage of a number

  • Thread starter zak100
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  • #1
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Homework Statement



What is 'a' divided by a% of a?

Homework Equations



a div a/a * 100

The Attempt at a Solution


a/1/a/a * 100 = a/100

which is not a correct answer. I cant define a%. In my view a% of a means 100 i.e. a/a * 100.

Some body please guide me.

Zulfi.
 

Answers and Replies

  • #2
SteamKing
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Homework Statement



What is 'a' divided by a% of a?

Homework Equations



a div a/a * 100

The Attempt at a Solution


a/1/a/a * 100 = a/100

which is not a correct answer. I cant define a%. In my view a% of a means 100 i.e. a/a * 100.

Some body please guide me.

Zulfi.
How would you express a% as a decimal number? Hint: what is 50% of something as a decimal number?
 
  • #3
Ray Vickson
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Homework Statement



What is 'a' divided by a% of a?

Homework Equations



a div a/a * 100

The Attempt at a Solution


a/1/a/a * 100 = a/100

which is not a correct answer. I cant define a%. In my view a% of a means 100 i.e. a/a * 100.

Some body please guide me.

Zulfi.
For a general value ##x##, what would be ##a\%## of ##x##? What would you get if you then put ##x = a##?
 
  • #4
462
11
Hi,
Thanks for your attention.

a% of x = a/x * 100
if x = a , i would get 100.
<
How would you express a% as a decimal number? Hint: what is 50% of something as a decimal number?
>
I know about 50% as 0.5. I got this knowledge from the forum last time. But i dont know how to express a%, maybe 0.0a????

Zulfi.
 
  • #5
Ray Vickson
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Hi,
Thanks for your attention.

a% of x = a/x * 100
if x = a , i would get 100.

Zulfi.
No, you have it wrong. 50% of 50 is one-half of 50, which is 25. 10% of 10 is one-tenth of ten, which is 1.
 
  • #6
462
11
Hi,
<50% of 50 is one-half of 50>
= 0.5 (50)
what about a% of a = (a/100 )* a.
Is the above correct?
Please guide me.
Zulfi.
 
  • #7
Ray Vickson
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Hi,
<50% of 50 is one-half of 50>
= 0.5 (50)
what about a% of a = (a/100 )* a.
Is the above correct?
Please guide me.
Zulfi.
Yes, ##a\%## of ##a## is ##(a/100)a = a^2/100##, just as you wrote.
 

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