Average marks of Rajesh in five subject is 84.if the average marks in four subject is 85.Find the marks second in the fifth subject
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Step-by-step explanation:
Let the subjects be A, B, C, D, E
Average of all subjects is 82
So the total marks scored will be 82×5= 410
Now he scores average of 86.5 in A and B
Total marks scored in A and B is 86.5×2= 173
Also he scores average of 84 in D & E
total marks scored in D& E will be 84× 2= 168
Total marks scored in A, B, D, E is 168+173= 341
Marks in C will be 420–341= 69
Thus the student scores 69 marks in third subject.
Thank you
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