ATQ,
The ratio of A and B's ages after 8 years is 4:5, so we get the equation 5(A+8)=4(B+8), which simplifies to 5A−4B=−8. The ratio of A and C's ages 6 years ago is 3:4, giving us the equation 4(A−6)=3(C−6), which simplifies to 4A−3C=6. The average age of A and C is 30, so A+C=60. Solving the system of equations, we substitute A = 60 − C into the second equation and solve to get C=33.43. Thus, the present age of C is approximately 33.43 years.
In a box there are 6 red, 12 blue, and 18 yellow cards. One card is picked up randomly. What is the probability that it is neither red nor yellow?
In an examination, there are three sections namely Reasoning, Math, and English. The reasoning part contains 7 questions. There are 4 questions in the m...
A bag contains 4 white balls, 5pink balls and 3 black balls. 2 balls are drawn randomly. What is the probability that there are no black balls?
A box consists of 125 apples out of which 25 are rotten. Khushboo comes to buy non-rotten apple. The shopkeeper takes out two apples and hands it over t...
Tom and Jerry throw alternatively a pair of dice. Tom wins if he throws 8 before Jerry throws 7 and Jerry wins if he throws 7 before Tom throws 8. Find...
Out of three girls and five boys, five children are to be randomly selected for a dance programme. What is the probability that all the selected childre...
A bag holds 'a' red bands and 5 green bands. If two bands are drawn sequentially at random without replacement, the probability that both selected bands...
Ten tickets numbered 1 to 15 are placed in a box, mixed up thoroughly and then one ticket is drawn randomly. If it is known that the number on the drawn...
The probability that Aarav passes the exam is (3/8) and the probability that Meera fails the exam is (3/5). If both Aarav and Meera give the exam, then ...
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?