Question : Directions: Sales of Books (in thousand numbers) from six Branches - B1, B2, B3, B4, B5 and B6 of a publishing Company in 2000 and 2001. Study the graph and answer the questions.
The average sale of branches B1, B3 and B6 in 2000 is what per cent of the average sale of branches B1, B2 and B3 in 2001?
Option 1: 87.5
Option 2: 75
Option 3: 77.5
Option 4: 82.5
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Correct Answer: 87.5
Solution :
Total sale of branches B1, B2, and B3 in 2001 = 105 + 65 + 110 = 280 thousands
Number of given branches = 3
Average sale of branches B1, B2, and B3 in 2001 = $\frac{105 + 65 + 110}{3}$ = $\frac{280}{3}$
Total sale of branches B1, B3 and B6 in 2000 = 80 + 95 + 70 = 245 thousands
Number of given branches = 3
Average sale of branches B1, B3, and B6 in 2000 = $\frac{80+95+70}{3}$ = $\frac{245}{3}$
Required percentage = $\frac{\text{Average sale of branches B1, B2, and B3 in 2000}}{\text{Average sale of branches B1, B2, and B3 in 2001}}\times100$
= $\frac{\frac{245}{3}}{\frac{280}{3}}\times100$
= 87.5%
Hence, the correct answer is 87.5%.
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