The following chart shows the sales (in thousands) of pens, pencils and books in month1, month2 and month3. Answer the question based on the chart.
| Month1 | Month2 | Month3 | |
| Pens | 5.6 | 4.9 | 4.6 |
| Pencils | 6.7 | 7.3 | 6.2 |
| Books | 4.5 | 5.7 | 6.3 |
Which product has the highest percentage of sales, and in which month (among all months) ?
Answer & explanation
Correct answer: option 4
Lets solve one by one for each option.
1. Pencils; Month 3
Total sale of pencils = 6.7 + 7.3 + 6.2 = 20.2
Sale of pencils in month 3 = 6.2
Percentage of sale of pencils in month 3 = \(\frac{6.2 }{20.2}\) × 100 = 30.69%
2. Pens; Month 1
Total sale of pens = 5.6 + 4.9 + 4.6 = 15.1
Sale of pens in month 1 = 5.6
Percentage of sale of pens in month 1 = \(\frac{5.6}{15.1}\) × 100 = 37.08%
3. Pencils;month 2
Total sale of pencils = 6.7 + 7.3 + 6.2 = 20.2
Sale of pencils in month 2 = 7.3
Percentage of sale of pencils in month 2 = \(\frac{7.3 }{20.2}\) × 100 = 36.13%
4. Books ; month 3
Total sale of books = 4.5 + 5.7 + 6.3 = 16.5
Sale of books in month 3 = 6.3
Percentage of sale of books in month 3 = \(\frac{6.3 }{16.5}\) × 100 = 38.18%
So , Books ; month 3 has highest percentage of sale.