5 feet is equal to 60 inches. 60 inches divided by 2.5 inches per hour means it would take 24 hours for the drill to reach five feet (assuming it maintains the same rate of digging)
There are 145 total pieces . you must first convert 20% to a decimal by placing a decimal point two places from the right. 20% = .20 then you mulitiply 145 x .20 = 29 So, Cathy owns 29 pieces of yellow clothing.
