There are 5 blue and 20 white marbles in a box of 50 marbles. select all the combination of marbles that add up to exactly 50% of the marbles in the box.
there are 5 blue and 20 white marbles in a box of 50 marbles.

select all the combination of marbles that add up to exactly 50% of the marbles in the box.

answer choices

only blue

only white

white and blue

all other marbles except white and blue