Arthur walks six blocks east and then 12 blocks north. If each block is one-third of a mile, how many miles did he walk?
Arthur walked $6+12=18$ blocks.  This is $$18\left(\frac{1}{3}\right)=\boxed{6}$$  miles.
6
Level 2
Prealgebra
Problem: Arthur walks six blocks east and then 12 blocks north. If each block is one-third of a mile, how many miles did he walk?
Solution:<|START_OF_LATENT|><|PRIOR_PREFIX|>To determine the total distance Arthur walked, we first need to calculate the distance he traveled in each direction. He walked six blocks east and twelve blocks north. 

Each block is one-third of a mile. Therefore, we can convert the number of blocks into miles. 

For the eastward distance:
- Distance east = 6 blocks * (1/3 mile/block) = 2 miles.

For the northward distance:
- Distance north = 12 blocks * (1/3 mile/block) = 4 miles.

Next, we find the total distance walked by adding the distances traveled in both directions:
- Total distance = Distance east + Distance north = 2 miles + 4 miles = 6 miles.

The final answer is 6.<|END_OF_LATENT|> The final answer is $6$.