we know that speed = distance/Time From statement II: Upstream speed = 30/6 = 5 km/hr From both I and II, Speed of boat = 1/2 (Downstream + upstream speed) 15 = 1/2 (downstream + 5) 30 = downstream +5 Downstream speed = 25 km/hr Therefore, both statement I and statement II together are necessary to answer the question.
Three cards are drawn one after another with replacements from a pack of cards. What is the probability of getting the first card a Jack, the second car...
A bag contains 20 white and some black balls. If the probability of drawing a black ball from the bag is 1.3 times that of drawing a white ball, ...
A bowl contains 9 blue balls, 7 white, and 5 black balls. If 2 balls are drawn in one go, then the probability of exactly one ball being blue is:
A student is required to answer 4 questions out of 12 questions in an English paper, which are divided into two sections of 6 questions each. If the stu...
If a coin is tossed repeatedly and the head appears for the first 94 times then what is the probability that the tail appears on the 95th toss?
A bag contains 16 black and 18 white balls. One ball is drawn at random. What is the probability that the ball drawn is white?
...The probability of selecting a rotten apple randomly from a heap of 1050 apples is 0.36. What is the number of rotten apples in the heap?
The names of 6 students from section A, 8 students from section B and 10 students from section C were selected. The age of all the 24 students was diffe...
The probability of selecting a rotten apple randomly from a heap of 250 apples is 0.20. What is the number of rotten apples in the heap?
...A bag contains 5 black balls,“a” white balls and “b” purple balls. If one ball taken out from the bag, then probability of being it white is 2/7...
