https://file.aiquickdraw.com/mathbot/file/17295835017167plnj9jy.jpg

Let's analyze the poster Riley sees to determine the lowest amount he can pay for 65 pencils:

- **Each pencil costs £0.30**.
- **A pack of 10 pencils costs £2**.

Riley wants exactly **65 pencils**.

### Step-by-step calculation:
1. First, calculate how many full packs of 10 pencils Riley can buy.
   \[
   \frac{65}{10} = 6 \text{ full packs (with 5 pencils remaining to buy separately)}
   \]

2. The cost of **6 packs** is:
   \[
   6 \times £2 = £12
   \]

3. Now, Riley needs **5 more pencils**, which he will have to buy individually at £0.30 each:
   \[
   5 \times £0.30 = £1.50
   \]

4. Finally, the total cost for 65 pencils is:
   \[
   £12 + £1.50 = £13.50
   \]

So, the lowest amount Riley can pay for exactly 65 pencils is **£13.50**.

Would you like more details or have any questions?

Here are 5 related questions to expand on this topic:
1. What if Riley wanted to buy 75 pencils? What would be the cost?
2. How much would Riley save if he bought all the pencils individually compared to buying packs?
3. How much would Riley pay if the cost of each pencil in a pack was reduced to £1.80 for 10 pencils?
4. What would the cost be if Riley bought 50 pencils?
5. How much would Riley pay if he wanted to buy 100 pencils using the packs?

**Tip:** When faced with a similar problem, always check if it's cheaper to buy in bulk rather than individually!

Riley wants to buy exactly 65 pencils. What is the lowest amount he can pay?

Find out how Riley can calculate the lowest amount he can pay to buy exactly 65 pencils. This problem involves cost analysis with both individual and bulk pricing options, and includes a step-by-step calculation suitable for students in Grades 5-7.

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