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1.  The cumulative bar chart below gives us the production of four Products A, B, C and D for four years. It is known that the total production increases @20% over its value in the previous year. The difference between C's production in 2003 and A's production in 2001 is 2640 units.

Production of A, B, C and D.
Bar Chart  direction image

If the price of B is Rs. 125 per unit, what is the sales revenue in the same year due to sale of B (in Rupees Lakhs)?

Solution:
Assume the total production of the first year as 10000, second year becomes 12000, third year 14400 and fourth year 17280.
Then,
0.2 × 17280 - 0.2 × 12000 = 1056
But this difference is given as 2640. Hence, the value of production will be; 25000, 30000, 36000, and 43200 respectively for the 4 years.
∴ Revenue
= 125 × 0.4 × 30000
= 1500000

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