A) 325
B) 310
C) 405
D) 372
Correct Answer: A
Solution :
[a]\[a+e+f+g=285,b+d+f+g=195\] |
\[c+d+e+f=115,e+g=45,f+g=70,\,\,d+g\] |
\[=50\] |
\[a+b+c+d+e+f+g=500-50=450\] |
We obtain,, |
\[a+f=240,b+d=125,c+e=65\] |
\[a+e=215,b+f=145;b+c+d=165\] |
\[a+c+e=225;\,\,a+b+f=335\] |
Solving we get |
\[b=95,c=40,a=190,d=30,e=25,f=50\]And \[g=20\] |
Desired quantity \[=a+b+c=325\] |
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