The sum of two number is 25 and their difference is 13. Find the product.
Solution
Correct Answer: Option B
Let the numbers be x and y.
Then, x + y = 25 and x - y = 13.
4xy = (x + y)2 - (x- y)2
= (25)2 - (13)2
= (625 - 169)
= 456
So, xy = 114.
Practice More Questions on Our App!
Download our app for free and access thousands of MCQ questions with detailed solutions