Question : 60 is what percent of 100? Or, What percent of 100 is equal to 60?
Correct Answer 60%
Solution & Explanation
Solution
Given number = 100
To find, 60 is what percent of 100?
This question can be written as also
What percent of 100 is equal to 60?
⇒ ?% of 100 = 60
Let ? = m
And the meaning of "of" in mathematics is "Multiplication".
∴ m% of 100 = 60
⇒ m% × 100 = 60
⇒ m/100 × 100 = 60
⇒ 100 m/100 = 60
After cross multiplication, we get
100 m = 60 × 100
After transposing 100 to RHS, we get
m = 60 × 100/100
⇒ m = 6000/100
⇒ m = 60%
Thus, 60% of 100 = 60
Thus, Answer = 60%
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 100 = 60
Here, we have ? = m
a = 100
And, b = 60
Thus, using formula
⇒ m = 60 × 100/100
= 60 × 100/100
= 6000/100 = 60%
Thus, 60% of 100 = 60
Thus, 60% Answer
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