Question

if 20% of a number is 12 what is 30% of the same number

Answer 1

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Let us take the no. be x.

Then,20%. of the no. =20%of x =20x/100=x/5

But , it is given 12.

So,

ATQ, x / 5 =12

or x =12 ×5.

Therefore x =60.

30% of same no. =30/100×60 =18.

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Answer 2

let the no. be x.
ATQ,
20% of x =12
20/100 × x=12
1/5× x = 12
x = 12×5/1
x = 60

30% of 60= 30/100 × 60 =1800/100= 18