Question : The table given below shows the marked price and selling price of 6 articles.
| Articles | Marked price | Selling price |
| A1 | 650 | 550 |
| A2 | 500 | 350 |
| A3 | 550 | 400 |
| A4 | 350 | 300 |
| A5 | 750 | 550 |
| A6 | 250 | 200 |
Discount = Marked price – Selling price
J1 = The value of the average discount of articles A1, A2, A3, and A4.
J2 = The difference between the marked price and the selling price of all articles.
What is the value of (J2 – J1)?
Option 1: 592.5
Option 2: 576.5
Option 3: 587.5
Option 4: 552.5
Correct Answer: 587.5
Solution :
The discount of the article A1 = 650 – 550 = 100.
The discount of the article A2 = 500 – 350 = 150.
The discount of the article A3 = 550 – 400 = 150.
The discount of the article A4 = 350 – 300 = 50.
J1 = The value of the average discount of articles A1, A2, A3, and A4
= $\frac{100+150+150+50}{4}=\frac{450}{4}=112.5$.
The difference between the marked price and the selling price of articles A5 = 750 – 550 = 200.
The difference between the marked price and the selling price of articles A6 = 250 – 200 = 50.
J2 = The difference between the marked price and the selling price of all articles
= 100 + 150 + 150 + 50 + 200 + 50 = 700.
The value of J2 – J1 = 700 – 112.5 = 587.5.
Hence, the correct answer is 587.5.
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