Calculate all of this please and you will get the brainlist

Answer this question only if you know the answer! 30 points and

Mustafa contributes 11% of his $67,200 annual salary to his 401k plan. what is his pretax income

Cody started biking to the park traveling 15 mph, after some time the bike got a flat so cody walked the rest of the way, traveling 4 mph. if the total trip to the park took 6 hours and it was 46 miles away, how long did cody travel at each speed? solve using rate times time= distance