The sum of two numbers is 18.
The sum of two numbers is 18. Their difference is 4. What are the numbers?
Answer/Solution
11,7
Steps/Work
Let two numbers be x and y.
Equation (i): x + y = 18
Equation (ii): x - y = 4
Solve system of equations:
2x=22
x=11
y=7
Answer C is correct.
Equation (i): x + y = 18
Equation (ii): x - y = 4
Solve system of equations:
2x=22
x=11
y=7
Answer C is correct.