Han, his sister, his dad, and his grandmother step onto a crowded bus with only 3 open seats for a 42-minute ride. they decided han’s grandmother should sit for the entire ride. han, his sister, and his dad take turns sitting in the remaining two seats, and han’s dad sits 1.5 times as long as both han and his sister. how many minutes did each one spend sitting?

With this one. will mark brainliest

Me. i can't figure out this question. give an explanation too. .

Abag contains 3 red marbles, 2 blue marbles, and 2 green marbles. one marble is picked, then another marble. assume that the selections are made with replacement. a) find the probability of picking two red marbles with replacement. b) find the probability of picking a red marble and a blue marble. assume the selections are made without replacement. c) find the probability of picking two red marbles without replacement. d) find the probability of picking a red marble and a blue marble without replacement.