The charge of a room at Sheraton is 25% less than that of a room at Westin and 10% less than that of a room at Sonargoan. By ...

The charge of a room at Sheraton is 25% less than that of a room at Westin and 10% less than that of a room at Sonargoan. By what percent is the charge of a room at Westin is greater than that of Sonargaon?