Donna and phyllis are reviewing for a math final. they have 150 pages to cover. donna can review 37 pages an hour, but phyllis can only go 2/3 as fast as donna. about how long does it take each girl to finish?

a) it takes donna 2 hours to finish, and it takes phyllis 4 hours to finish.
b) it takes donna 4 hours to finish, and it takes phyllis 6 hours to finish.
c) it takes donna 4 hours to finish, and it takes phyllis 3 hours to finish.
d) it takes donna 6 hours to finish, and it takes phyllis 4 hours to finish.