Alan must take a 4 hours 40 minute test, containing 325 questions, 75 of which are science questions. Twice as much time needs to be devoted for science questions than any other question. The total number of time that Alan must spend on the science portion of the test is what?

Type the correct answer in the box. use numerals instead of words. if necessary, use / for the fraction bar. a city water tank holds 20 gallons of water. a technician empties 25% of the tank. how many more gallons of water must be removed from thetank so that it has 5 of the water that it started with: the technician must removemore gallons of water for the tank to have 5 of the water that it started with.