Percentage
MCQs Math


Question:     180 is what percent of 340? Or, What percent of 340 is equal to 180?


Correct Answer  52.94%

Solution And Explanation

Solution

Given number = 340

To find, 180 is what percent of 340?

This question can be written as also

What percent of 340 is equal to 180?

⇒ ?% of 340 = 180

Let ? = m

And the meaning of "of" in mathematics is "Multiplication".

∴ m% of 340 = 180

⇒ m% × 340 = 180

m/100 × 340 = 180

340 m/100 = 180

After cross multiplication, we get

340 m = 180 × 100

After transposing 340 to RHS, we get

m = 180 × 100/340

⇒ m = 18000/340

⇒ m = 52.94%

Thus, 52.94% of 340 = 180

Thus, Answer = 52.94%

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 340 = 180

Here, we have ? = m

a = 340

And, b = 180

Thus, using formula

⇒ m = 180 × 100/340

= 180 × 100/340

= 18000/340 = 52.94%

Thus, 52.94% of 340 = 180

Thus, 52.94% Answer


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