It takes 40 minutes to fill a water tank, and 60 minutes to drain it. how many hours will it take to fill the tank while draining it the entire time?

If $740 is invested at an interest rate of 11% per year and is compounded continuously, how much will the investment be worth in 7 years? use the continuous compound interest formula a = pert.

20 points + brainliest answer + my mom’s chocolate chip cookie ! subtract.

42. if 20 men can eat 200 kg of wheat in 40 days, then 10 men can eat 300 kg of wheat in how many days? a) 120 days b) 60 days c) 80 days d) none of these