The extra amount of money that Jenny need to buy the tiles is equal to 560 Pence.
<h3>How much extra does Jenny need to buy the tiles?</h3>
First of all, we would determine the area of the trapezium by using this formula:
Area = ½ × (b₁ + b₂) × h
Area = ½ × (2.5 + 1.5) × 15.5
Area = 31 m².
For the tiles she needs, we have:
Number of packs needed = 31/2
Number of packs needed = 15.5 ≈ 16 m².
For the price, we have:
Price of 16 packs of tiles = 16 × £8.80
Price of 16 packs of tiles = £140.8.
For the price after using discount card of 25%, we have:
New price = 140.8 - (0.25 × 140.8)
New price = 140.8 - 35.2
New price = £105.6.
Difference = 105.6 - 100
Difference = £5.6.
<u>Conversion:</u>
1 pounds = 100 pence
5.6 pounds = X pence
Cross-multiplying, we have:
X = 100 × 5.6
X = 560 Pence.
Read more on discount price here: brainly.com/question/16872186
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