where is gym

Question

Ping lives at the corner of 3rd Street and 6th Avenue. Ari lives at the corner of 21st Street and 18th Avenue. There is a gym the distance from Ping's home to Ari's home.

Where is the gym?

Answer 1

Assuming that the word "same" should be before distance.

 

We would label Ping's location (3, 6) and Ari's location as (21, 18)

Halfway from 3 to 21 is 12.

Halfway from 6 to 18 is 12.

 

The gym is at 12th Street and 12th Avenue

Answer 2

Something is missing to determine the location of a gym between ping's and ari's locations