Question

The sum of two numbers is 39. One of these numbers is the double of the other number. What are the two numbers

Answer 1

Answer:

x + y = 39

x = 2 * y We could also say y = 2 * x, but I chose x to be larger.

We can use the method of substitution, plugging the second equation into our first and then solving:

(2 * y) + y = 39

3 * y = 39

y = 13

Using our second equation:

x = 2 * (13)

x = 26

Step-by-step explanation:

the numbers are 26,13

Answer 2

Answer:

13 and 26

Step-by-step explanation:

Let the smaller number be x

∴ The other number = 2x

Sum of numbers = 39

⇒ x + 2x = 39

3x = 39

x = 39 ÷ 3

x = 13

2x = 26