Question

In the box, there are 34 black marbles, 17 red marbles, 53 blue marbles, and 13 white ones. What tion of all marbles are not black? I really need help.

a. 17/117
b. 83/117
c. 70/117
d. 100/117

Answer 1

To determine the fraction of non-black marbles, calculate the total number of marbles and subtract the number of black marbles. The fraction of non-black marbles among all marbles in the box is 83/117.

Step-by-step explanation:

The question pertains to finding the fraction of marbles in a box that are not black. Given the counts for different colors of marbles - 34 black marbles, 17 red marbles, 53 blue marbles, and 13 white marbles - one can calculate the total number of marbles and then determine how many are not black.

First, find the total number of marbles:

• Black: 34
• Red: 17
• Blue: 53
• White: 13

Adding these together gives us:

34 (black) + 17 (red) + 53 (blue) + 13 (white) = 117 total marbles.

Next, calculate the number of non-black marbles:

17 (red) + 53 (blue) + 13 (white) = 83 non-black marbles.

The fraction of non-black marbles is the number of non-black marbles divided by the total number of marbles:

83/117

Therefore, the correct answer is:b. 83/117