The following table shows the number of pens and the number of erasers of 6 different colours that were sold from a stationery store during a given week.
|
Colours |
Pens |
Erasers |
|
C1 |
20 |
15 |
|
C2 |
24 |
21 |
|
C3 |
40 |
12 |
|
C4 |
22 |
18 |
|
C5 |
26 |
27 |
|
C6 |
36 |
33 |
The total number of erasers having colours C3 or C4 is approximately what percentage of the average number of pens of each colour?
Answer & explanation
Correct answer: option 2
Average number of pens = \(\frac{20 + 24 + 40 + 22 + 26 + 36 }{6}\)
= \(\frac{168 }{6}\)
= 28
Total number of erasers of color C3 & C4 = 12 + 18 = 30
Required percentage = \(\frac{30}{28}\) × 100
= 107.14%