Question 33
Linear and Simultaneous EquationsIf x + 0.4y = 3 and y = ½x, find the value of (x + y).
- A.1¼
- B.2½
- C.3¾
- D.5
Show the answer and explanation
Answer: C (3¾)
Explanation
x + 0.2x = 3, so x = 2.5 and y = 1.25. x + y = 3.75 = 3¾.
If x + 0.4y = 3 and y = ½x, find the value of (x + y).
Answer: C (3¾)
x + 0.2x = 3, so x = 2.5 and y = 1.25. x + y = 3.75 = 3¾.