Final answer:
To calculate the original price of the watch before the discount, first find the total cost before the discount and then subtract the original price of the trainers. The price of the watch before the discount is £25.00.
Step-by-step explanation:
Jason bought trainers for £38 before a 15% loyalty discount and the total cost including a watch and the trainers after the discount was £53.55. To find the original price of the watch before the discount, perform the following steps:
- Calculate the total cost before the discount by dividing the discounted total by 0.85 (since 15% off is the same as paying 85% of the total cost).
- Subtract the known original price of the trainers from the total cost before the discount to find the original price of the watch.
The total before the discount is £53.55 / 0.85 = £63.00. The price of the watch before the discount is £63.00 (total cost) - £38.00 (trainers) = £25.00.