The sum of two numbers is 66 and their difference is 22. What is the ratio of…
2021
The sum of two numbers is 66 and their difference is 22. What is the ratio of the two numbers?
- A.
2 : 1
- B.
6 : 5
- C.
17 : 5
- D.
5 : 1
Attempted by 34 students.
Show answer & explanation
Correct answer: A
To find the ratio, we first identify the two numbers using a system of linear equations. Let the two numbers be x and y.
Set up the equations:
x + y = 66 (Sum)
x - y = 22 (Difference)
Solve for the numbers:
Add the two equations: (x + y) + (x - y) = 66 + 22
2x = 88
x = 44
Substitute x into the first equation: 44 + y = 66
y = 66 - 44 = 22
Determine the ratio:
The ratio of the two numbers is x : y = 44 : 22.
Dividing both sides by 22, we get 2 : 1.