The correct probability of not choosing a green marble is 80%. This can be determined using either fractions or percentages, resulting from dividing the number of non-green marbles by the total number of marbles and then converting the fraction to a percentage if needed.
the chance of not choosing green is 75%. There are two different methods we can use to find this answer: using fractions and using percentages.
To calculate using fractions, we first find the total number of marbles, which is 4 (green) + 6 (red) + 8 (pink) + 2 (grey) = 20 marbles. Since there are 4 green marbles, the number that is not green is 20 - 4 = 16 marbles. So, the fraction of not choosing green is 16/20, which simplifies to 4/5. To find the percentage, we convert the fraction 4/5 into a percentage by multiplying it by 100, which gives us 80%.
However, the information given in the question is different from the data we just calculated (it says 6 red, 8 pink, and 2 greys), so we would recalculate based on the actual numbers from the problem statement. In that case, we would have 6 + 8 + 2 = 16 marbles that are not green out of 20 total, which gives us the correct fraction 16/20 or 80% chance of not choosing green.
either method—fractions or percentages—will give us the correct probability of not choosing a green marble from the bag.