To find out how much money Debra has left after spending her pocket money, we first need to calculate how much she spent on magazines and the necklace.
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Calculating the amount spent on magazines: Debra spent \( \frac{1}{3} \) of her £15 on magazines. \[ \text{Amount spent on magazines} = \frac{1}{3} \times 15 = 5 \]
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Calculating the amount spent on the necklace: Debra spent \( \frac{2}{5} \) of her £15 on the necklace. \[ \text{Amount spent on the necklace} = \frac{2}{5} \times 15 = 6 \]
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Calculating the total amount spent: Now we add the amounts spent on magazines and the necklace. \[ \text{Total amount spent} = 5 + 6 = 11 \]
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Calculating the amount left: Finally, we subtract the total amount spent from her original pocket money. \[ \text{Amount left} = 15 - 11 = 4 \]
Therefore, Debra has £4 left.
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