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To find the difference in price between the two brands when buying 700g of hot chocolate, we need to calculate the price per gram for both brands and then scale it to 700g. Here's how we can approach it:

1. **Brand A**:
   - Price: £2.65 for 140g.
   - Price per gram: \( \frac{2.65}{140} \approx 0.01893 \, \text{£/g} \).
   - Cost for 700g: \( 0.01893 \times 700 \approx 13.25 \, \text{£} \).

2. **Brand B**:
   - Price: £3.10 for 175g.
   - Price per gram: \( \frac{3.10}{175} \approx 0.01771 \, \text{£/g} \).
   - Cost for 700g: \( 0.01771 \times 700 \approx 12.40 \, \text{£} \).

3. **Difference**:
   - Difference in cost: \( 13.25 - 12.40 = 0.85 \, \text{£} \).

Thus, **Brand A** is **£0.85 more expensive** than Brand B for 700g of hot chocolate.

Would you like any further details on this or have any questions?

Here are 5 related questions to explore:
1. How would the difference in price change for different quantities of hot chocolate?
2. What is the percentage difference between the prices of Brand A and Brand B per gram?
3. How would this change if there was a discount on one of the brands?
4. If you wanted to buy 1 kg of each brand, what would the total cost be?
5. What is the price difference if you buy 350g of each brand?

**Tip**: Always calculate the price per unit when comparing products of different sizes!

What is the difference in price between the two brands when buying 700g of hot chocolate?

Find out the price difference between two brands of hot chocolate when buying 700g. This solution breaks down unit price calculations and demonstrates how to determine total costs. Suitable for students in Grades 6-8.

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