One custodian cleans a suite of offices in 9 hours when a second worker is asked to join the regular custodian the job takes only four and a half hours how long does it take the second worker to do the same job alone

Complete the frequency table: method of travel to school walk/bike bus car row totals under age 15 60 165 age 15 and above 65 195 column totals 152 110 98 360 what percentage of students under age 15 travel to school by car? round to the nearest whole percent.