On the average a submarine on patrol sights 6 enemy ships per hour. Assuming the number of ships sighted in length of time is a Poisson variate the probability of sighting 6 ships in the next half an hour is

314 weavers weaves 6594 shawls in (1)/(6) hours. What is the number of shawls weaved per hour by an average weaver?

Two ships leave a port at the same time.One goes 24 km per hour in the direction and other travels 32km^(@)E direction Find the distance between the ships at the end of 3hours.

314 weavers weaves 6594 shawls in 1//6 hours what is the number of shawls weaved per hour by average weaver?

A salesman travels a distance of 50 km in 2 hours and 30 minutes. How much faster, in kilometres per hour, on an average, must he travel to make such a trip in 5 /6 hour less time?

Two candles of the same height are lighted at the same time the first is consumed in 8 hours and the second in 6 hours .Assuming that each candles burn at constant rate in how many time after being lighted the ratio of length become 5:4 .