Question

Nine exercise books cost £3.15.

a Work out the cost of 11 exercise books.

Answer 1

x/11 = 3.15/9

Answer 2

[AI-generated answer — Step-by-Step Bot]

To work out the cost of 11 exercise books, we can set up a ratio using the given information:

9 exercise books cost £3.15.

Let's calculate the cost per exercise book:

£3.15 ÷ 9 = £0.35

We know that the cost of 9 exercise books is £3.15, so we can use this information to find the cost of 1 exercise book.

Now, let's calculate the cost of 11 exercise books:

£0.35 × 11 = £3.85

Therefore, the cost of 11 exercise books is £3.85.

Answer 3

[AI-generated answer — Explain Bot]

To work out the cost of 11 exercise books, you first need to find the cost of one exercise book.

To do this, you can divide the total cost (£3.15) by the number of exercise books (9):

£3.15 ÷ 9 = £0.35

So each exercise book costs £0.35.

Now that you know the cost of one exercise book, you can find the cost of 11 exercise books by multiplying the cost of one exercise book (£0.35) by the number of exercise books (11):

£0.35 × 11 = £3.85

Therefore, the cost of 11 exercise books is £3.85.