The question asks for the total cost of a pencil case, ruler, and pen, followed by calculating the change from a £5 note. Here's the solution step by step:

• Pencil case: £2.70
• Ruler: 45p (which is £0.45)
• Pen: 60p (which is £0.60)

Now, the total cost is:

$\text{Total cost} = 2.70 + 0.45 + 0.60 = £3.75$

Simon pays with a £5 note, so his change will be:

$\text{Change} = 5.00 - 3.75 = £1.25$

Thus, Simon should get £1.25 as change.

Would you like more details on this calculation or have any questions?

Here are 5 related questions to consider:

1. How would the change calculation differ if Simon paid with a £10 note?
2. What would happen if Simon bought a pencil instead of a