Aminiature horse weighs 268 fewer kilograms than a shetland pony. how much do the shetland pony weigh if the miniature horse is 56 kg

The bolo cavern outside of vandalia is 421 ft below sea level. a little more than75 miles away. mt owens is 7295 feet above sea level. what is the difference in elevation between the bolo cavern and mt owens?