Question:
( 6 of 10 ) 5 is what percent of 23? Or, What percent of 23 is equal to 5?
(A) 66 1/3% या 66.33%
(B) 99 1/3% या 99.33%
(C) 33 1/3% या 33.33%
(D) 16 1/3% या 16.33%
You selected
32.61%
Correct Answer
21.74%
Solution And Explanation
Solution
Method (1)
Given number = 23
To find, 5 is what percent of 23?
This question can be written as also
What percent of 23 is equal to 5?
⇒ ?% of 23 = 5
Let ? = m
And the meaning of "of" in mathematics is "Multiplication".
∴ m% of 23 = 5
⇒ m% × 23 = 5
⇒ m/100 × 23 = 5
⇒ 23 m/100 = 5
After cross multiplication, we get
23 m = 5 × 100
After transposing 23 to RHS, we get
m = 5 × 100/23
⇒ m = 500/23
⇒ m = 21.74%
Thus, 21.74% of 23 = 5
Thus, Answer = 21.74%
Method (2) Shortcut Method
Shortcut Method to find a number is what percent of other
If we have to find
? % of a = b
Here, let ? = m
Thus, above expression can be written as
m% of a = b
⇒ m/100 × a = b
⇒ m × a/100 = b
After cross multiplication, we get
m × a = b × 100
⇒ m = b × 100/a
Thus, using this formula, we can find a number (a) is what (m) percent of b
In the question, we have to find what percent of 23 = 5
Here, we have ? = m
a = 23
And, b = 5
Thus, using formula
⇒ m = 5 × 100/23
= 5 × 100/23
= 500/23 = 21.74%
Thus, 21.74% of 23 = 5
Thus, 21.74% Answer
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