Applications of Rational Expressions and Word Problems

Wei's birthday is coming up. Toni, Lane, and Arman want to throw him a surprise party. $$\\$$ All $4$ of them live on the same (straight) street such that Arman and Toni live south of Wei and Arman lives north of Wei. Furthermore, it takes Toni $20$ minutes to walk to Wei's at $6$ miles per hour and Arman $20$ minutes to walk to Wei's place at $4$ miles per hour. $$\\$$ If Lane lives $5$ miles away from Wei and drives at $30$ miles per hour, how long will it take him to pick up Arman and Toni and then get to Wei's apartment?