You have one number 2 times the other number, and the sum is 90. What are the two numbers?

Question

I need help with the formula

Answer 1

we assume these two numbers are x and y

then

2*x=y

x+y=90

 

x+2x=90

x=30

 

y=2x=2*30=60

 

so these two numbers are 30 and 60

Answer 2

The equation you need is N + 2N = 90. N is one number and 2N is 2 times the other number.

 

Add left side since the letter is the same. 3N = 90.

 

Divide both sides by 3.

 

3N/3 = 90/3

N = 30

 

2N = 60

 

30 + 60 = 90.

 

I'm available for online tutoring if needed.

Answer 3

Let x equal one of the unknown numbers.  The other number is "2 times" the first number, so it's 2x.  Their sum is 90:

 

x + 2x = 90

3x = 90

 

Solve for x