The bar graph below shows the production of coffee (in lakh tons) by four companies A, B, C and D over a period of four
years from 2010 to 2013. Study the graph and answer the question that follows.

![image.png](https://res.cloudinary.com/aptidude/image/upload/v1746986269/aptidude_questions/xtbumcj2r9oi5ntxjsev.png)

The combined average production for four years of companies A and C is what percentage (rounded off to 2 decimal places) more/less than the combined average production for four years of companies B and D?

Question

The bar graph below shows the production of coffee (in lakh tons) by four companies A, B, C and D over a period of four
years from 2010 to 2013. Study the graph and answer the question that follows.

![image.png](https://res.cloudinary.com/aptidude/image/upload/v1746986269/aptidude_questions/xtbumcj2r9oi5ntxjsev.png)

The combined average production for four years of companies A and C is what percentage (rounded off to 2 decimal places) more/less than the combined average production for four years of companies B and D?

Accepted Answer

Step 1: Calculate total production for each company over 4 years.
- Company A: 60 + 90 + 140 + 220 = 510 lakh tons
- Company B: 70 + 100 + 150 + 210 = 530 lakh tons
- Company C: 50 + 190 + 180 + 250 = 670 lakh tons
- Company D: 120 + 170 + 200 + 260 = 750 lakh tons

Step 2: Calculate combined total production for companies A and C:
510 + 670 = 1180 lakh tons

Step 3: Calculate combined total production for companies B and D:
530 + 750 = 1280 lakh tons

Step 4: Calculate combined average production for A and C over 4 years:
1180 / 4 = 295 lakh tons

Step 5: Calculate combined average production for B and D over 4 years:
1280 / 4 = 320 lakh tons

Step 6: Calculate the percentage difference between the averages:
Difference = 320 - 295 = 25
Percentage difference = (25 / 320) * 100 = 7.8125%

Since the average production of A and C is less than that of B and D, the combined average production for A and C is less by approximately 7.81% compared to B and D.

Answer

Answer

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