Kieran picks a bead out of a bag without looking. He records the colour and replaces the bead. Kieran does this 50 times. He picks out a red bead 15 times. Estimate the probability of picking a red bead.

3/10

Step-by-step explanation:

From the question, we are informed that Kieran picks a bead out of a bag without looking and that he records the colour and replaces the bead.

He does this 50 times and he picks out a red bead 15 times. The probability of picking a red bead will be the number of times a red bead was picked divided by the number of title times a bead was picked. This will be:

= 15/50

= 3/10

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