Final answer:
Alexei's father received a 22% discount on the new trumpet, which was calculated by dividing the discount amount by the original price and then multiplying by 100.
Step-by-step explanation:
To determine the percentage of the discount that Alexei's father received on the trumpet, we need to follow a two-step process. Firstly, we calculate the percentage by using the formula for percentage: (Discount Amount / Original Price) × 100. Secondly, we apply the formula to the given numbers.
Here is the calculation:
Discount Percentage = ($33 / $150) × 100
= (0.22) × 100
= 22%
Therefore, Alexei's father received a 22% discount on the new trumpet.