Question
In an examination the percentage of students qualified
with respect to the number of students appeared from school A is 75%. The number of students appeared from school B is 25% more than the number of students appeared from school A, and the number of students qualified from B is 20% more than the number of students qualified from school A. What percentage of students qualified among those who appeared from school B?Solution
Suppose 100 students appeared from school A. Now, Appeared Qualified A = 100 75 B = 125 120% of 75 = 90 Required % = 90/125*100 = 72 %
A bag contains a few red balls and 2 green balls. Two balls are drawn randomly without replacement. The probability that both balls are red is (2/5). Wh...
A basket contains (x + 4) red apples, (x + 6) green apples, and (x + 8) yellow apples. The probability of drawing a yellow apple from the basket is (7/2...
A bag contains (K - 2) red balls, 8 black balls, and 14 blue balls. If two balls are drawn randomly, the probability that both are black is 2/27. Calcul...
Three Marbles and three balls are kept in a box. If two items are chosen at random, Find the probability that one is marble and another one is ball?
R goes to the gym either by cycle, car, or walking. On a specific day, the probability of him going by car is 0.3 less than the probability of walking a...
Two cards are drawn at random from a pack of 52 cards. What is the probability that either both are black or both are queens?
A bag contains 4 red balls, 5 blue balls, and 3 green balls. Two balls are drawn randomly. What is the probability that both are blue?
- Find the probability of selecting a face card from a deck of well shuffled cards.
A bag contains (x + 7) small toys, (x + 12) medium toys, and (x + 17) large toys. The probability of drawing a large toy from the bag is (4/9). Find the...
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...