Let's break down the information given in the problem:
- Jason has 8 spoons.
- There are twice as many forks as spoons. This means: \[ \text{Number of forks} = 2 \times \text{Number of spoons} = 2 \times 8 = 16 \text{ forks} \]
- There are 34 as many knives as forks. This means: \[ \text{Number of knives} = 34 \times \text{Number of forks} = 34 \times 16 \]
Now, let's calculate the number of knives: \[ 34 \times 16 = 544 \]
Therefore, Jason has 544 knives.