The given table shows the number of books on different subjects:

| Subjects | Number of books |
|----------|----------------|
| B1 | 120 |
| B2 | 150 |
| B3 | 150 |
| B4 | 120 |
| B5 | 120 |

What is the ratio of the number of books for subject B1 to the average number of books per subject?

Question

The given table shows the number of books on different subjects:

| Subjects | Number of books |
|----------|----------------|
| B1       | 120            |
| B2       | 150            |
| B3       | 150            |
| B4       | 120            |
| B5       | 120            |

What is the ratio of the number of books for subject B1 to the average number of books per subject?

Accepted Answer

Step 1: Find the total number of books.
Total = 120 (B1) + 150 (B2) + 150 (B3) + 120 (B4) + 120 (B5) = 660

Step 2: Find the average number of books per subject.
Average = Total number of books / Number of subjects = 660 / 5 = 132

Step 3: Find the required ratio (B1 : Average)
B1 = 120, Average = 132
So, ratio = 120 : 132

Step 4: Simplify the ratio.
120 : 132 = (120 ÷ 12) : (132 ÷ 12) = 10 : 11

Therefore, the required ratio is 10 : 11.

Answer

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