Mark has a bag that contains exactly 3 black marbles, 6 gold marbles, 2 purple
marbles and 6 red marbles.
Mark finds a number of white marbles and adds them to the bag. He tells Sam
that if she now draws a marble at random from the bag, the probability of it
being black or gold is 3
7
.
How many white marbles did Mark add to the bag?
Problem of the Week
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Mark added 4 white marbles.
Mark added 4 marbles to the bag
OMYGLUBNESS
Miffer wu is making this HARD.
Idk but I think it’s 4 or something but I’m not sure
Mark added four white
marbles to the bag.
Mark added 4 white marbles to the bag.
I think that mark added 4 white marbles to the bag.