For each 100 8th grade girls in a certain middle school, 85 play soccer, 70 have a cell phone, 75 have a tablet computer, and 80 play a musical instrument. What is the least possible number of these 100 girls who play soccer, have a cell phone, own a tablet computer, and play a musical instrument?
To find the least possible number of girls who have all four attributes (play soccer, have a cell phone, own a tablet computer, and play a musical instrument), we need to look at the attribute with the fewest number of occurrences.
In this case, we know that the number of girls who play soccer is 85, the number of girls who have a cell phone is 70, the number of girls who own a tablet computer is 75, and the number of girls who play a musical instrument is 80.
Among these numbers, we find the smallest value, which is 70, indicating the number of girls who have a cell phone. This means that the maximum number of girls who could have all four attributes is 70.