How long is 21 working days?

How much does a 1 x 4 x 10 weigh? What is the mass of gold that has a volume of 10 and density of 19.3? Write 6 functions of whole saller? What are the numbers if the sum is 34 and the difference 10? What is -7a - 10 equals 20 - 3a? How many minutes in one sixth of an hour? .625 in a percent? What is 29 divided my 9? How many stones are in 52kg? How much is 1.86m in feet? What would 1 tenths be in decimals? Is 6.8 equal to 9.12? What is 9.125 as an improper fraction? How many ways are there to seat 25 people? What do you call the numbers you add to get the sum? How many syllables are in when's? What is 5.250km in meter? How many inches in 43560 square feet? How many box combinations of 4 numbers from 8 numbers? What could be the volume of a cylindrical tank with diameter equals 3.6m and height equals 4.8m?