A student got 92 % marks in an exam of 600 marks. If marks of Hindi are printed 97instead of 79, the

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03 Aug 2011 marks

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

OPtion

1) 72
2) 76
3) 78
4) 80
5) 82.5
6) 84.5
7) 88
8) 89
9) 91
10) none of these

Solution

total difference of marks = 97-79 = 18
6 marks = 1% (total marks = 600 so 1 % = 600/100 = 6 marks)
18/6 = 3 % so true % = 92-3 = 89

Correct Option: 8 Best Solution (6)

A.P.Singh   12 years AGO

If marks of Hindi are printed 97instead of 79, means actual marks are 18 less than printed marks and then the true % obtained by the student will be 18/6=3 percent less than 92% i.e. 89%.

Like? Yes (5) | No (1)  

sacreties   12 years AGO

the total marks got by student is (92*600/100)=552 marks
the hindi mark of the student is 18 less from previous mark
so, subtarct 18 from the previous total mark 552-18=534 marks
so,534 is the exact total of the student
% of mark is (534*100/600)=89%
hence,option 8 is the answer

Like? Yes (3) | No (2)  

Sayani Majumdar   12 years AGO

92%0f 600=552
TRue %=((552-(97-79))/600)*100=89%

Like? Yes (2) | No (1)  

Aparajita Chowdhury   12 years AGO

he got,(92/100)*600=552
if he got 79 instead of 97 then total marks should be,552-(97-79)=534
so,true % will be,(534/600)*100=89

Like? Yes (2) | No (1)  

geetha   12 years AGO

92%out of 600 marks
so total is 552.
mark change is 97-79=18,
so true % is 89%.

Like? Yes (1) | No   

srujan madikanti   12 years AGO

92% of 600 is 552. instead of 79, its printed as 97, so the diff is 18. 18 marks has to be deduced from the total of 552, which is 534. that is 89%...

Like? Yes (2) | No (2)