Maria has £40. A coat is priced at £65. In week 1, the price is reduced by 20%. In week 2, the price is reduced by a further £10. Does Maria have enough money to buy the coat in week 2?

The normal price is £65. In Week 1, the price is reduced by 20%.

$$\text{Reduction} = 20\% \text{ of } \pounds65 = \frac{20}{100} \times 65 = \frac{1}{5} \times 65 = \pounds13$$ $$\text{Price in Week 1} = \pounds65 - \pounds13 = \pounds52$$

In Week 2, the price is reduced by a further £10 from the Week 1 price.

$$\text{Price in Week 2} = \pounds52 - \pounds10 = \pounds42$$

Maria has £40. The price of the coat in Week 2 is £42.
Since $\pounds40 < \pounds42$, Maria does not have enough money.

Maria does not have enough money to buy the coat in week 2 of the sale. She needs an additional $\pounds42 - \pounds40 = \pounds2$.