Complex sentence: The resultant carbocation is also stabilized by both inductive stabilisation and hyperconjugation from attached alkyl groups, and the Hammond-Leffler postulate suggests that this too will increase the rate of carbocation formation.
Split into simpler sentences: The resultant carbocation is also stabilized by both inductive stabilization and hyperconjugation from attached alkyl groups. The Hammond-Leffler postulate suggests that this too will increase the rate of carbocation formation.