Answer:
The sum of the two numbers is 15
Step-by-step explanation:
Let the counting numbers be x and y.
Then we can write the following equations
x=4y.......1 (one is four times greater )
x(y)=36.....2 (the product of the two)
Putting equation 1 into equation 2, we get
4y(y)=36
![{4y}^{2} = 36](https://tex.z-dn.net/?f=%20%7B4y%7D%5E%7B2%7D%20%3D%2036%20)
Dividing through by 4,we get
![{y}^{2} = \frac{36}{4}](https://tex.z-dn.net/?f=%20%7By%7D%5E%7B2%7D%20%3D%20%20%5Cfrac%7B36%7D%7B4%7D%20)
![{y}^{2} = 9](https://tex.z-dn.net/?f=%20%7By%7D%5E%7B2%7D%20%3D%209)
Taking square root of both side, we obtain
y=3
Putting the value of y into equation , we get
x=4(3)=12
Hence the numbers are 3 and 12
Therefore the sum of the two numbers is 3+12=15