The sum of two number is 25 and their difference is 13

Explanation
Let x and y be the two numbers
So according to the condition we have two equations
x+y=25 and x-y=13
On adding both equation we get
2x=38
x=19
On replacing values in first equation we get
y=25-19
y=6
Now we need the product of two numbers which will be 19*6=114
Final Answer
The correct option is B. i.e. 114