The Ages 4 years Difference Problem is as shown :
Chris is 4 years older than this brother Paul. If they’re ages are in the ratio of 9 : 7 , then what is Paul’s age ? .
a. 15 yrs
b. 16 yrs
c. 18 yrs
d. 20 yrs
e. None of these
The solution is given below :
EXPLANATION :
Considering Chris and Paul as brothers, we know Chris is elder by 4 years. So {Chris’s age} – {Paul’s age} = 4.
But we know that the ratios of their ages is 9:7 .
So we can say that if Chris’s ages is 9x then Paul’s age will be 7x.
So we can now write, 9x – 7x = 4.
2x = 4
x= 2.
So this Paul’s ages is 7(2) = 14 yrs.
Since that option is not present, the answer is 14 yrs or (e) None of the above