We have been given that according to Jax's pedometer, he walked 2.783 km while taking care of the livestock in the morning and 3.124 km taking care of the livestock in the evening.
To find total walk of Jax while taking care of livestock we will add distances covered by Jax in the morning and evening.
Therefore, Jax walked 5 km and 907 m while taking care of the livestock.