Question

There are 25 children in a class. If a child is chosen at random there is a 20% chance that the child is a member of the school band. How many children in the class are in the band?

Answer 1

To find out the number of children in the class who are in the school band, multiply the total number of children by the probability (20%) that a child is in the band. There are 5 children in the band.

Step-by-step explanation:

If there is a 20% chance that a child chosen at random from a class is a member of the school band, and there are 25 children in the class, then we can calculate the number of children in the band by finding 20% of 25.

To find the 20% of 25, we use the formula:

• Number of children in the band = Total number of children in class × Probability (as a decimal) that a child is in the band

Converting 20% to a decimal gives us 0.20. Now, let's calculate:

Number of children in the band = 25 × 0.20 = 5

Therefore, there are 5 children in the class who are members of the school band.