Question : The table given below shows the demand and production of five articles.
| Articles | Demand | Production |
| A | 175 | 225 |
| B | 200 | 300 |
| C | 100 | 250 |
| D | 50 | 400 |
| E | 400 | 500 |
J1 = The difference between total demand and total production of A, B and C.
J2 = The value of the average of demand and production of E.
What is the value of (J1 - J2)?
Option 1: 100
Option 2: –150
Option 3: 150
Option 4: –100
Correct Answer: –150
Solution :
J1 is the difference between the total demand and total production of A, B, and C.
⇒ J1 =(175 + 200 + 100) − (225 + 300 + 250)
= 475 − 775
= 300
J2 is the value of the average of demand and production of E.
⇒ J2 = $\frac{400+500}{2}$ = 450
So, (J1 − J2) = (300 – 450) = –150
Hence, the correct answer is –150.
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