Machine-translated by Google. Questions are authored in English.
Top

Discussion

The product of two numbers is 120 and the sum of their squares is 289. The sum of the two numbers is:

  • A.20
  • B.23
  • C.169
  • D.21

Answer: B

Let the numbers be x and y.

Given, xy = 120 and \(x^2 + y^2 = 289\).

We know that \((x+y)^2 = x^2 + y^2 + 2xy\).

Substitute the given values: \((x+y)^2 = 289 + 2(120) = 289 + 240 = 529\).

Therefore, x + y = \(\sqrt{529} = 23\).

No comment is present. Be the first to comment.
Loading…

Post your comment

Please log in or register to post a comment.