It takes Marvin 2/3 of an hour to mow 1/2 of his lawn. If Marvin continues mowing at the same rate, how long will it take him to mow his entire lawn?

How to solve a simultaneous equation involved with fractions?

Four airplanes carrying a total of 400 passengersarrive at the detroit airport. the airplanes carry, respectively,50, 80, 110, and 160 passengers.a) one of the 400 passengers is selected uniformly at random.let x denote the number of passengers that were on theairplane carrying the randomly selected passenger. find var(x)for x as given in the problemb) one of the 4 airplane drivers is also selected uniformly atrandom. let y denote the number of passengers on the chosen driver’s airplane. find var(y) for y as given in the problem

When steve woke up. his temperature was 102 degrees f. two hours later it was 3 degrees lower. what was his temperature then?