Question

the sum of numbers when a number is increased by 10% and decreased by 10% is 100 what is the number
$right \: answer \: = 50$
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Answer 1

Answer:

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Answer 2

let the number be 'x'

increased number = x + 10% of x

x + 0.1x = 1.1 x

decreased number = x - 10% of x

= x - 0.1x = 0.9x

sum= 100

1.1x + 0.9x = 100

2x 100 => x = 50

Answer: required number = 50