Question 6
Linear and Simultaneous EquationsA student bought 3 notebooks and 1 pen for N35. After misplacing these items, she again bought 2 notebooks and 2 pens, all of the same type for N30. What is the cost of a pen?
- A.N5.00
- B.N7.50
- C.N10.00
- D.N15.00
Show the answer and explanation
Answer: A (N5.00)
Explanation
3n + p = 35 and 2n + 2p = 30 (n + p = 15). Subtracting: 2n = 20, n = 10, so p = 5.