Answer:
10
Step-by-step explanation:
Let "x" be the number
A number is twice the other: 2x
According to the question, the total sum is 30.
Your equation could be: 2x + x = 30
Now, solve for x in the equation:
2x + x = 30
=> 3x = 30
=> 3x/3 = 30/3
=> x = 10
The number is 10.
hope this helps!! p.s. i really need brainliest :)