Question
‘Nikhil’ and ‘Amit’ started a firm with investments
of Rs. 2,800 and Rs. 4,200 respectively. After 16 months, Nikhil increased his amount by 25%, and Amit reduced his by Rs. 1,000. If they made Rs. 8,000 profit in 3 years, what’s the difference in their shares?Solution
ATQ,
Increased investment of ‘Nikhil’ = 2800 × 1.25 = Rs. 3,500
Decreased investment of ‘Amit’ = 4200 – 1000 = Rs. 3,200
Ratio = (2800 × 16 + 3500 × 20):(4200 × 16 + 3200 × 20) = 134.0:150.4 = 335:376
Difference = 8000 × {(376 – 335) ÷ (376 + 335)} = Rs. 456
Two cards are drawn at random without replacement from a standard deck of 52 cards. Find the probability that both cards are red
A box contains 6 Brown and 8 Blue caps. There is another box which contains 8 Brown and 7 Blue caps. One cap is to drawn from either of the two boxes. ...
- A coin is tossed 5 times. ‘A’ wins the game if exactly 3 heads appear. Otherwise, ‘B’ wins. What is the probability that ‘A’ wins?
A card is drawn from a standard deck of 52 cards. What is the probability that it is a face card or a heart?
A game consists of tossing three coins once and then rolling two dice. Find the probability of getting no heads in the coin toss and a sum equal to 4 on...
There are 14 boys and 6 girls giving interview for a job. If three of them are selected, then what is the probability that one of the three is a girl an...
One five letter word is to be formed taking all letters – U, Z, M, O and Q. What is the probability that this formed word will contain all vowels tog...
A letter is taken out at random from ‘ROORKEE’ and another is taken out from ‘BOOKKEEPER’. The probability that they are the same letter is
- A box contains 8 green balls, 6 blue balls and 6 yellow balls. Two balls are drawn at random. What is the probability that at least one of them is yellow?
A box contains 3 blue, 2 white and 4 red marbles. If a marble is drawn at random from the box, what is the probability that it would be white.
Relevant for Exams:
