A) 30
B) 25
C) 20
D) 35
Correct Answer: C
Solution :
Let the no be a, b and c respectively Then \[a+b=45\] \[\begin{matrix} b+c & = & 55 \\ 3\,\,(c+a) & = & 90 \\ c+a & = & 30 \\ a+b+b+c+c+a & = & 45+55+30 \\ 2a+2b+2c & = & 130 \\ a+b+c & = & 65 \\ a+b & = & 45 \\ - & - & - \\ c & = & 20 \\ \end{matrix}\] Subtractive (ii) from (i) Third no: is 20You need to login to perform this action.
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