Question

If two positive numbers differ by 5. If their product is 336, then the sum of the two numbers is:

• A. 21
• B. 28
• C. 37
• D. 51
• E. 19

Answer 1

The correct option is C

37

Let the number be x and y .Then, x-y=5 and xy = 336

${\left(x+y\right)}^2={\left(x-y\right)}^2+4xy=25+4\times 336=1369\Rightarrow x+y=\sqrt{1369}=37.$