The average marks for 5 subjects is 62. If average of 6 subjects is 63. Then what will be the dif

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19 Jan 2010 Marks in 6 subject

The average marks for 5 subjects is 62. If average of 6 subjects is 63. Then what will be
the difference between marks of 6th subject and average of 5 subjects.

OPtion

1) 5
2) 6
3) 12
4) 18
5) 1
6) 10
7) 15
8) 12.6
9) 10.5
10) 9

Solution

Total marks for first five subjects are 62*5 = 310
Total marks for six subjects are 63*6 = 378
Marks for sixth subject are 378 – 310 = 68
Difference is 68 – 62 = 6

Correct Option: 2 Best Solution (4)