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The sum of two numbers is 75. Their difference is 25. Find the numbers.

User Lynkfox
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3 votes

Answer:

50 + 25 = 75

50 - 25 = 25

The numbers are 50 and 25

Explanation:

The sum of two numbers is 25 and their difference is 75. 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 25. In other words, x plus y equals 25 and can be written as equation A:

x + y = 75

The difference between x and y is 75. In other words, x minus y equals 75 and can be written as equation B:

x - y = 75

Now solve equation B for x to get the revised equation B:

x - y = 25

x = 25 + y

Then substitute x in equation A from the revised equation B and then solve for y:

x + y = 75

25 + y + y = 75

25 + 2y = 75

2y = 50

y = 25

Now we know y is 25. Which means that we can substitute y for 25 in equation A and solve for x:

x + y = 75

x + 25 = 75

X = 50

Therefore,

Sum: 50 + 25 = 75

Difference: 50 - 25 = 25

Hope this helps! :D

User AlliterativeAlice
by
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