waec model questions vol6 2024 mathematics
Objective • Question 6
Question 6
WAEC_MODEL_QUESTIONS_VOL6
•
2024
A shop sells two types of pens. Let the original price of pen A be a naira and pen B be b naira. The shop sold x pens of type A and y pens of type B. It is known that the number of type A pens sold is twice the number of type B pens and the total number of pens sold is 120. After increasing the price of pen A by 20% and decreasing the price of pen B by 10%, the revenue from selling the same quantities increased by 15%. Find the ratio a : b.
Answer Options
A.
6:1
B.
3:5
C.
4:3
Correct Answer
D.
5:2
Correct Answer
D
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