Acomputer cost 849.75 and the hard drive is 61.3% if thr total cost. what is a reasonable estimate for the cost of teh hardrive

To compute the reasonable estimate for the cost of the hard drive, you must mulitply the cost of the total computer by the percent of the hard drives cost compared to the cost of the total computer divided by 100.  In short, 849.75*0.613 which equals 520.90.