One weekday, the ticket sales person at a bus station asks every 10th ticket buyer if they had planned to use a laptop computer
while traveling. Of the 145 travelers questioned, 54 said yes. Based on this sample, predict how many people out of 3100 weekday bus travelers will use a laptop while traveling. Round to the nearest whole number.
From the 3100 weekday bus traveler, 310 travelers will be
asked by the sales person. And for every 2.685 traveler questioned, a traveler will
say yes. So there will be 115 bus travelers that will use a laptop computer
while travelling.
Now you have to find out what is in the blank by doing 80 times 30 to find what that equals. That equals 2,400. Now you have to find what times a 100 gets you 2,400. You divide a 100 by 2,400 to get 24. There's your answer
