A) 8
B) 6
C) 7
D) 9
Correct Answer: C
Solution :
Let the number of minors in the family be x. \[\therefore \] \[8\times 15+x\times 6=(8+x)10.8\] \[\Rightarrow \] \[120+6x=86.4+10.8x\] \[\Rightarrow \] \[4.8x=33.6\] \[\Rightarrow \] \[x=7\]You need to login to perform this action.
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