The table below shows the ratio of books to pens sold by four different shops along with the average total number of books and pens sold by each shop....
Question
The table below shows the ratio of books to pens sold by four different shops along with the average total number of books and pens sold by each shop.
| Shop | Ratio of books to pens (books : pens) | Average number of books & pens sold |
|---|---|---|
| A | 4 : 1 | 100 |
| B | 1 : 3 | 60 |
| C | 2 : 3 | 75 |
| D | 3 : 2 | 90 |
What percentage less is the total number of books sold by shop B compared to the total number of pens sold by shop C?