Pls help. The probability of choosing a red marble out of a bag of marbles is 3/10. What are the odds in favor of choosing a red marble? (Justify your answer)

3 : 7

Step-by-step explanation:

If the probability of choosing red = 3/10

The we can infer that ; ratio of the number of red marbles to the total number of marbles = 3 : 10

Thus number if marbles that aren't red :

10 - 3 = 7

The odd in favor of picking a red marble :

Red : not red

3 : 7

b

step-by-step explanation:

36 girls

step-by-step explanation:

the 48 boys is 4 parts of the ratio

divide 48 by 4 to obtain one part of the ratio

= 12 ← 1 part of the ratio

3 parts = 3 × 12 = 36 ← number of girls