The sum of two certain natural numbers is 28 and it’s product is 192. What is the smaller of these two numbers?
12
14
16
18
19
Let the number be x and (28−x)
Then, x(28−x)=192⇔x2−28x+192=0⇔(x−16)(x−12)=0 ⇔ x=16 or x=12.
So, the numbers are 16 and 12