Consider the question. Forty percent of the students have elected to learn from home during the pandemic. The remaining students are divided into two equal groups, only one of which is physically in school on any day. What percent of students are present in school?
 What is the step-by-step reasoning process to arrive at the answer: 30?
100 - 40 = 60 percent of students are remaining. 60 / 2 = 30 percent are present in school.