A) 40 years
B) 45 years
C) 48 years
D) 50 years
Correct Answer: B
Solution :
Let father and son be x years and y years old now. \[(1,2)\] \[x-20=(y-20)\times 5\] \[P(x)={{a}_{0}}+{{a}_{1}}x+{{a}_{2}}{{x}^{2}}+.....+{{a}_{n}}{{x}^{n}}\]\[x-5y=-80\] ?(1) And \[y+16=41\]\[\Rightarrow \]\[y=25\] ?(2) From equations (1) and (2) \[-9,\frac{15}{4},\frac{-13}{3}\]You need to login to perform this action.
You will be redirected in
3 sec