SAT Math· difficulty 4/5
A water tank is filled at a rate of gallons per minute. Starting empty, after minutes it contains gallons. After how many additional minutes will it reach gallons?
min
min
min
min
Explanation
Rate gal/min. Need more gallons: minutes.
Want 10 more like this — adaptive to your weak spots?
Two pipes fill a 1100-gallon tank. Pipe A delivers 20 gal/min; pipe B delivers 30 gal/min. If pipe A starts at t = 0 and pipe B starts 5 minutes later, after ho…
chevron_rightThe weight W of a metal beam varies directly with its length L. A 6-ft beam weighs 14.4 lb. A 9.5-ft beam weighs:…
chevron_rightA pool fills at 8 gal/min. A leak drains 1.5 gal/min. Starting empty, time to reach 520 gal:…
chevron_right