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 determine the least possible number of girls who satisfy all four conditions, we need to find the lowest common value among the given numbers.
To solve this, we identify the lowest value among the given numbers: 70 (the number of girls who have a cell phone). This means that at least 70 girls have a cell phone, play soccer, own a tablet computer, and play a musical instrument.
Therefore, the least possible number of these 100 girls who satisfy all four conditions is 70.