Question : The bar graph given below shows the cost price and selling price of four articles J, K, L and M.
The average cost price of J and K together is how much percentage more than the average selling price of L and M together?
Option 1: 12.5%
Option 2: 14.28%
Option 3: 20%
Option 4: 7.28%
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Correct Answer: 14.28%
Solution :
Average cost price of J and K $=\frac{700+900}{2}=800$
Average selling price of L and M $=\frac{600+800}{2}=700$
Difference = 800 – 700 = 100
Required percentage = $\frac{\text{Difference}}{\text{Average of L and M}}\times100$
= $\frac{100}{700}\times100$
= $14.28$%
Hence, the correct answer is 14.28%.
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