Question

Jordan traveled 6/7 of an estimated 1,800-mile trip. how many miles remain in her trip:

Answer 1

if she has already traveled 6/7 of the way, then all she has remaining is 1/7.

1/7 of 1800..." of " means multiply
1/7 * 1800 = 1800/7 = 257.14 miles left <==

Answer 2

Jordan traveled 6/7 trip, which means only 1/7 remains

Multiply 1800 with 1/7

1800 x 1/7 = 1800/7 = 257.24

~257 miles remaineth.

hope this helps