A student got 92 % marks in an exam of 600 marks. If marks of Hindi are printed 97instead of 79, then the true % obtained by the student will be
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let the total marks obtained be x
therefore,(x/600)×100=92%
x=(92×600)/(100)
x=552
therefore, subtracting incorrect mark and adding correct mark,we get
552-97+79=534
therefore, original percentage:- =(534/600)×100
=89%
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