A) 72
B) 90
C) 80
D) 60
Correct Answer: C
Solution :
\[\frac{Physics+Chemistry+English}{3}\] \[=\frac{Hindi+Physics+Chemistry+English}{4}+5\] Also, Hindi = Physics - 30 and Chemistry + English \[=65\times 2=130\] \[\therefore \,\,\frac{Physics\text{ }+130}{3}\] \[=\frac{Physics-30+Physics+130+20}{4}\] \[\Rightarrow \,\frac{Physics+130}{3}=\frac{2\,Physics\,+120}{4}\] \[4\times Physics+520=6\,Physics+360\] Marks in Physics \[=\frac{1}{2}\,\,(520-360)\] \[=\]
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