the sum of two answers is 40 and their difference is 10 what are the two numbers
Answers
Step-by-step explanation:
25 and 15!!!!!!!!!!!!!!!
Answer:
The sum of two numbers is 40 and their difference is 10. What are the two numbers? Let's start by calling the two numbers we are looking for x and y.
The sum of x and y is 40. In other words, x plus y equals 40 and can be written as equation A:
x + y = 40
The difference between x and y is 10. In other words, x minus y equals 10 and can be written as equation B:
x - y = 10
Now solve equation B for x to get the revised equation B:
x - y = 10
x = 10 + y
Then substitute x in equation A from the revised equation B and then solve for y:
x + y = 40
10 + y + y = 40
10 + 2y = 40
2y = 30
y = 15
Now we know y is 15. Which means that we can substitute y for 15 in equation A and solve for x:
x + y = 40
x + 15 = 40
X = 25
Summary: The sum of two numbers is 40 and their difference is 10. What are the two numbers? Answer: 25 and 15 as proven here:
Sum: 25 + 15 = 40
Difference: 25 - 15 = 10