Question

the odds against picking a red marble from a bag are 4:3. what is the probability of picking a red marble

Answer 1

3/7, because there are 7 marbles, and 3 of them are red.

Answer 2

3/7 chance of picking a red marble.

Explanation:

You know that there are 4 non-red marbles and 3 red marbles. You know this because of the statement "he odds against picking a red marble from a bag are 4:3.".

Now you must both amounts of marbles to find the total.

3+4=7

now,

we know that we are looking for the odds of picking a red marble.

So, 3 red marbles in a bad of 7 marbles.

Our odds are 3/7!