a number decreased by 23%become 539. find the number
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let the no be x
x--23% of x=530
=>100x--23x/100=539
=>77x/100=539
=>x=539*100/77
=>x=700
x--23% of x=530
=>100x--23x/100=539
=>77x/100=539
=>x=539*100/77
=>x=700
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