A Student got 78 marks in avg of 4 subjects.the avg odf 5 subjects is 80.what is the amrk he got in 5th subject.
Pick.
A) 87  B) 88  C) 89  D) 90  E) 91
avg mrk he got in 5th subject=80*5-78*4   avg mrk he got in 5th subject=400-312= 
<gadget id="calculator">400-312</gadget>
<output>88</output>
88   ANSWER:88
<result>B</result>
A Student got 78 marks in avg of 4 subjects.the avg odf 5 subjects is 80.what is the amrk he got in 5th subject.