If an Examination there are three subject of 100 marks each. A student scores 60% in the 1 st subject and 80% in the second subject. He scored 70% in aggregate. His percentage of marks in the third subject is :
[ A ] 60
[ B ] 65
[ C ] 70
[ D ] 80
Answer : Option C
Explanation :
So, marks in third subject = 70 × 3 – 60 – 80 = 70%
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