A) 7 yr
B) 36 yr
C) 49 yr
D) 64 yr
Correct Answer: B
Solution :
Let the present age of the son be x year. Man's present age\[=[7(x-1)+1]\]yr \[=(7x-6)\]yr \[\therefore \] \[\]\[\Rightarrow \]\[{{x}^{2}}-7x+6=0\] \[(x-6)(x-1)=0\]\[\Rightarrow \]\[x=6\] or \[x=1\] \[\therefore \] Man's present age \[=(7\times 6-6)\]yr = 36 yrYou need to login to perform this action.
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