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?

a. 5 children
b. 10 children
c. 15 children
d. 20 children

Answer 1

To determine the number of children in the band, the 20% probability is converted to a decimal and multiplied by the total number of children (25), resulting in 5 children in the band. Therefore correct option is A

Step-by-step explanation:

To calculate the number of children in the class who are in the band, we use the percentage given. We are told there is a 20% chance that a child chosen at random is a member of the school band. First, we convert the percentage to a decimal by dividing by 100, giving us 0.20. We then multiply this decimal by the total number of children in the class.

Number of children in the band = 0.20 × total number of children in the class

Number of children in the band = 0.20 × 25

Number of children in the band = 5

Therefore, there are 5 children in the class who are in the band, which corresponds to choice (a).