Question

a number increased by 12% becomes 391 what will be the number

Answer 1

let the number be X
then 12% of X=391
12/100×X=391
X=391×100/12
X=39100/12
X=9775/3

Answer 2

Hi there !
Here's the answer:


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Let the No. be x
12% of x = (12/100)x = 0.12x

No. is increases by 0.12x
New No. = x + 0.12x = 1.12x


Given,
New No. = 391
=> 1.12x = 391
=> 112x = 39100
=> x = 39100/112

•°• x = 349.1

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Hope it helps