A) 24
B) 42
C) 54
D) 60
Correct Answer: B
Solution :
Let the third number be x. \[\therefore \] Second number = 3x and first number = 6x \[\therefore \] \[6x+3x+x=3\times 20\] \[\Rightarrow \] \[10x=60\] \[\Rightarrow \] \[x=6\] \[\therefore \] Required sum \[=6x+x=7x\] \[=7\times 6=42\]You need to login to perform this action.
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