Algebramedium · Past Paper
The sum of two numbers is 25 and their difference is 7. Find the numbers.
A16, 9
B15, 10
C18, 11
D14, 11
✓ Correct Answer: A — 16, 9
x+y=25, x-y=7. Adding gives 2x=32 (x=16). Subtracting gives 2y=18 (y=9).
Share this question
More from Algebra
- The HCF of two polynomials is (x-3) and their LCM is x^2-9. If one polynomial is x^2-9, find the other.
- Identify the remainder when x^3 + 1 is divided by x + 1.
- Calculate the value of 3x^3 - 2x^2 + 5 when x = 0.
- Find the value of (x-a)^3 + (x-b)^3 + (x-c)^3 if a+b+c = 3x.
- Find the product of the roots of the equation 3x^2 + 7x - 9 = 0.