 
 <translate> Kevin is taking a 600-mile trip, traveling at a rate of 50 miles per hour. How much faster must he travel to decrease his travel time by 4 hours? Let's be accurate as possible. <hau> Kevin yana tafiya mai nisan mil 600, yana tafiya da saurin mil 50 a awa daya. Yaya sauri dole ne ya yi tafiya don rage lokacin tafiyarsa da awanni 4? Bari mu zama daidai kamar yadda zai yiwu. 