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 the tank so that it has 2/5 of the water that it started with?
20 empties 25% 25%=1/4 1/4 of 20 is 5 20-5=15 15 left how much more must be removes so it reaches 2/5 of 20 2/5 of 20=40/5=8 15-what=8 minus 15 both sides -what=-7 multipy-1 what=7
