What is Fifteen microseconds?

Why is 30 percent of 250 75 percent? What is the standard for 1 meter? What size rectangular floor can be completely covered by using 3x3 and 5x5 tiles? What is the special name for things that add up to 180? What is 24 plus 41? What it the equation for six less than seven times some number? How many sevens in fourteen? What the fraction of radiation a surface can reflect is called? How many min in 175? How many pounds of force is applied to man 250 lbs falling 3 feet? How to calculate trig and log? What is 36 percent of 96? what does something add something equal? What is 20.5 percent in a fraction form? What is the parenthetical element of comma? What is the forumla for finding the perimeter of a square? What day of the week was March 6 1954? Is a ace in a deck of card a higher card or a lower card? Six months is how many days? A nation has a population of 260 million people There are 188 million who are employed and 12 million who are unemployed. What is the unemployed rate?