Mainly calcium carbonate.
He will have 13 blue marbles and 10 green marbles.
12 blue marbles
20% of 50 marbles is 1 fifth of the marbles in the bag. so 50 marbles divided by 5 =10 blue marbles
24
The fraction is 3/15.
Uranium marbles contain up to 3 % uranium; these marbles are fluorescent under an UV light.
odds are 5 to 3
He will have 13 blue marbles and 10 green marbles.
10 Green marbles, 13 Blue marbles.
He has 10 green marbles.
There could be 12 white marbles and 16 red marbles
at least 39 blue marbles
8:6
12 blue marbles
24 red marbles
12 blue marbles
If there are 20 red marbles and 40 blue marbles, the ratio of red to blue is 1 over 2. The number of white marbles does not matter.