What are the country names, area and population which has both roller coasters with speed higher
select t1.name, t1.area, t1.population from country as t1 join roller_coaster as t2 on t1.country_id = t2.country_id where t2.speed > 60 intersect select t1.name, t1.area, t1.population from country as t1 join roller_coaster as t2 on t1.country_id = t2.country_id where t2.speed < 55