Question

What are the odds against choosing a green or red marble from a bag that contains two blue marbles, one green marble, seven white marbles, and four red marbles?

5:14
5:9
9:14
9:5

Answer 1

Option #1 (5:14)

Explanation:

The reason I chose option relies fully on these steps:

To find the ratio that represents the situation, you have to find the denominator of the fraction that the ratio itself represents:

5 : 14

9 : 5

To find this element you count the total number of objects that are in the problem:

2 + 1 + 7 + 4 = 14 total marbles to choose from - our denominator.

But what about the other number? That's our numerator, and we can find that by counting how many of the select possibilities - only counting the red and green marbles that may be chosen:

1 + 4 = 5

Therefore our denominator and numerator come together to form 5/14, which is equivalent to 5 : 14!

I hope this helped a bunch! Tell me if you need any further assistance...

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