Complete question :
Water is pumped out of a 500-gallon tank at a rate of 2.5 gallons per second. The inequality 500−2.5t<100 can be used to determine the time t in seconds, after which there will be less than 100 gallons of water remaining in the tank.
Answer:
t < 160
Explanation:
Given the inequality :
500−2.5t<100
-2.5t < 100 - 500
-2.5t < - 400
Divide both sides by 2.5
2.5t /2.5 < 400 / 2.5
t < 160
The time in seconds it takes to for there to be less than 100 gallons of water is 160s