Avat containing 10,000 gallons of black ink supplies 3 different printing presses. press 1 uses 12 gallons per minute, press 2 uses 10 gallons per minute and press 3 uses 15 gallons per minute. if the vat was full at 7: 30 am and all three presses run constantly when will the vat run dry?
12: 00 p. m.
12: 00 a. m.
12: 20 p. m.
2: 00 p. m.

18

step-by-step explanation:

draw the shape and you will see that f and k are actually at adjacent vertices (points of the hexagon that are neighboring).   so find the distance between (1,2) and (4,2).   that is easy since (1,2) and (4,2) is just a vertical distance to count, which is 3.   it is a regular polygon which means all sides are congruent.   you have 6 sides (hexa) so multiply 6 by 3 to receive 18.