(10) A bookshelf has 80 books on it. There are 28 English books, 32 Mathematics books and the rest are Science books. Find the percentage of (a) English books, (b) Mathematics books, (c) Science books on the bookshelf.

To determine the percentage of each category of books on the bookshelf, we'll follow these steps: 1. **Find the total number of each type of book:** - **English books:** 28 - **Mathematics books:** 32 - **Science books:** Total books - (English books + Mathematics books) \( 80 - (28 + 32) = 80 - 60 = 20 \) 2. **Calculate the percentage for each category:** The formula to find the percentage is: \[ \text{Percentage} = \left( \frac{\text{Number of specific books}}{\text{Total number of books}} \right) \times 100\% \] a) **English books:** \[ \left( \frac{28}{80} \right) \times 100\% = 35\% \] b) **Mathematics books:** \[ \left( \frac{32}{80} \right) \times 100\% = 40\% \] c) **Science books:** \[ \left( \frac{20}{80} \right) \times 100\% = 25\% \] **Summary of Percentages:** - **English books:** 35% - **Mathematics books:** 40% - **Science books:** 25%