yes£18
Step-by-step explanation:
The amount Lila and Wassim plan to save is ...
 (£13 +13)(9) = £234
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The charges they expect to incur are a per-person charge and a tent pitch charge. Since they expect to stay 10 nights, the special rate means they will only be charged for 8 nights.
per-person charge
 per-person-per-night charge = (2 persons)(8 nights)(£6 per person-night)
 = £96
tent pitch charge
To determine the tent pitch area required, we need to find the area of the tent:
 A = LW = (4.2 m)(2.3 m) = 9.66 m²
This is less than 10 square meters, so we can expect the pitch charge to be £15 per night for 8 nights.
 tent pitch charge = (£15/night)(8 nights) = £120
So, the total of camp site charges is expected to be ...
 person charge + pitch charge = £96 +120 = £216
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The expected savings exceeds the expected charges by ...
 £234 -216 = £18
Lila and Wassim will have enough saved, with £18 extra.
