The sum of two numbers is 40 and their difference is 28. Find their product. Choose the correct answer
A) 104  B) 108  C) 114  D) 204  E) None
Sol.   Let the numbers be x and y.   Then, x + y = 40 and   x - y = 28   2x = 68 =&gt; x = 34   y = 6   xy = 34 * 6= 
<gadget id="calculator">34 * 6</gadget>
<output>204</output>
204   Answer : 204
<result>D</result>
The sum of two numbers is 40 and their difference is 28. Find their product.