In a middle school of 80 students, 42 girls and 38 boys. What is the probability that if two students were randomly chosen, the first is a boy and then a girl sequentially?

Francis is getting new carpet tiles in his living room and den. his living room and den are connected. he needs to figure out how much carpet he needs and the cost involved. if each tile costs $2.00 per sq ft, how much would it cost to have new tile put in the den? a) $24 b) $36 c) $48 d) $54 plz awnser soon