Answer :

Certainly! Let's solve this step by step.

1. Understand the Savings Rate:
- Mrs. Wallace saves £34 for every £200 she earns.
- First, we need to determine how much she saves per £1 of earnings.
- To find this, we divide the savings (£34) by the earnings (£200).

[tex]\[ \text{Savings rate} = \frac{34}{200} = 0.17 \][/tex]

This means that Mrs. Wallace saves £0.17 for every £1 she earns.

2. Calculate Savings for Last Month:
- Last month, Mrs. Wallace earned £1000.
- To find out how much she saved from this amount, we multiply her total earnings (£1000) by the savings rate (0.17).

[tex]\[ \text{Amount saved last month} = 1000 \times 0.17 = 170 \][/tex]

So, Mrs. Wallace saved £170 from her earnings last month.

Conclusion:
Mrs. Wallace saves £170 from her £1000 earnings last month.