Gce Model Questions Vol1 2018 Commerce Question 19

A retailer advertises a "Buy One Get One Half Price" (BOGOHP) offer on a product whose listed price is £120. The offer is said to apply to a single purchase per customer. A customer buys two units and pays £180 (full price for the first, half price for the second). The receipt, however, shows a mandatory environmental levy of £15 per unit, which was not mentioned in the advertisement, and a sales tax of 8 % applied to the subtotal after the levy. Determine the effective percentage discount the customer actually received relative to the advertised total price for two units (£240). Also, state whether the retailer's practice could be considered a breach of consumer‑protection regulations concerning misleading price information.