Discussion
Home ‣ Aptitude ‣ Alligation or Mixture See What Others Are Saying!
- Question
A mixture contains 25% milk and rest water. What percent of this mixture must taken out and replaced with milk so that in mixture milk and water may become equal.
Options- A. 31.8%
- B. 31%
- C. 33.33%
- D. 29.85%
- Correct Answer
- 33.33%
ExplanationNow, take percentage of milk and applying mixture rule
25 100
50
50 25 = 2 : 1
Hence required answer = 1/3 or 33.33%
- 1. A cistern has three pipes A, B and C. Pipes A and B can fill it in 3 and 4 h, respectively, while pipe C can empty the completely filled cistern in 1 h. If the pipes are opened in order at 3:00 pm, 4:00 pm and 5:00 pm, respectively , at what time will the cistern be empty?
Options- A. 6:15 pm
- B. 7:12 pm
- C. 8:12 pm
- D. 8:35 pm Discuss
- 2. There are three taps of diameter 1 cm, 4/3 cm and 2 cm, respectively. The ratio of the water flowing through them is equal to the ratio of the square of their diameters. The biggest tap can fill the tank alone in 61 min. If all the taps are opened simultaneously, how long will the tank take to be filled?
Options- A. 44 min
- B. 45 min
- C. 155/18
- D. None of the above Discuss
- 3. The average of odd number upto 100 is?
Options- A. 51
- B. 50
- C. 49.5
- D. 49 Discuss
- 4. What sum will discharge a debt of Rs. 5300 due a year and a half hence at 4% per annum?
Options- A. Rs. 5000
- B. Rs. 4500
- C. Rs. 4200
- D. Rs. 5250 Discuss
- 5. A sum of money amounts to Rs. 702 in 2 years and Rs. 783 in 3 years. The rate percent is?
Options- A. 12% per annum
- B. 13% per annum
- C. 14% per annum
- D. 15% per annum Discuss
- 6. A company offers three types of successive discounts : (i) 25% and 15%, (ii) 30% and 10%, (iii) 35% and 5%. Which offer is the best for a customer?
Options- A. First offer
- B. Second offer
- C. Third offer
- D. Any one; all are equally good Discuss
- 7. Goods were bought for Rs. 600 and sold the same day for Rs. 650.25 at a credit of 9 month and still there was a gain of 2%. The rate percent is?
Options- A. 61/3%
- B. 81/3%
- C. 8%
- D. 743/61% Discuss
- 8. The interest on Rs. 750 for 2 years is equal to the true discount on Rs. 810 for the same time and at the same rate. The rate percent is?
Options- A. 41/3%
- B. 51/6%
- C. 4%
- D. 5% Discuss
- 9. If Rs. 64 amount to Rs. 83.20 in 2 years. What will Rs. 86 amount to in 4 years at the same rate percent per annum?
Options- A. Rs. 137.60
- B. Rs. 124.70
- C. Rs. 114.80
- D. Rs. 127.40 Discuss
- 10. Rs. 20 is the true discount on Rs. 260 due after a certain time. What will be the true discount on the same sum due after half of the former time, the rate of interest being the same?
Options- A. Rs. 10
- B. Rs. 10.40
- C. Rs. 15.20
- D. Rs. 13 Discuss
More questions
Correct Answer: 7:12 pm
Explanation:
Let the cistern gets emptied in m h after 3:pm
Work done by A in m h, by B in (m - 1) h and by c in (m - 2) h= 0
? m/3 + (m - 1)/4 - (m - 2) = 0
? 4m + 3(m - 1) - 12(m - 2) = 0
? 5m = 21
? m = 21/5 = 4.2
? m = 4 h 12 min
? Required time = 7 : 12 pm.
Correct Answer: None of the above
Explanation:
Time taken to fill the tank by the tap having 2 cm diameter = 61 min
? Time taken to fill the tank by the tap having 1 cm diameter
= 61 x (2/1)2 = 244 min
Similarly, time taken to fill the tank by the tap having 4/3 cm diameter
= 61 x [(2 x 3)/4]2 = 61 x 9/4 = 549/4 min.
? Part of the tank filled by all the three pipes in 1 min
= 1/61 + 1/244 + 1/(549/4)
= (36 + 9 + 16)/2196 = 61/2196 = 1/36
Hence, required time taken = 36 min
Correct Answer: 50
Explanation:
sum of odd number upto 100 = 1 + 3 + 5 + 7+....+ 95 + 97 + 99
=(1+99) + (3+97) + (5+95) +.... upto 25 terms
= 100 + 100 + 100 +.... upto 25 terms
= 2500
Average = 2500 /50
= 50
Correct Answer: Rs. 5000
Explanation:
Required sum = (100 x 5300) / {(100 + (3/2) x 4)}
= (100 x 5300) / 106 = Rs. 5000
Correct Answer: 15% per annum
Explanation:
S.I. for 1 year = Rs. (783 - 702) = Rs 81
S.I. for 2 years = Rs. (81 x 2) = Rs. 162
? Sum = Rs. (702 - 162) = Rs. 540
? Required rate = = (100 x SI) / (P x T) = (100 x 162) / (540 x 2) % = 15%
Correct Answer: Third offer
Explanation:
Correct Answer: 81/3%
Explanation:
S.P. = (102% of Rs. 600) = Rs. (102/100) x 600 = Rs. 612
? P.W. of Rs. 650.25 due 9 months later is Rs. 612.
? Rs. 38.25 is S.I. on Rs. 612 for 9 months
? Rate = (100 x 38.25) / (612 x 3/4)% = 81/3%
Correct Answer: 4%
Explanation:
Since T.D. is S.I. on Rs. P.W.,
we have Rs. (810 - 750) or Rs. 60 as S.I. on Rs. 750 for 2 years
? Rate = (100 x 60) / (750 x 2) = 4%
Correct Answer: Rs. 137.60
Explanation:
S.I on Rs. 64 for 2 year = Rs. 19.20
? Rate = (100 x SI) / (P x T) = (100 x 19.20) / (64 x 2) = 15%
? S.I On Rs. 86 for 4 year = (P x R x T) / 100 = Rs. (86 x 4 x 15 ) /100 = Rs.51.60
? Amount of Rs. 86 after 4 years = Rs. (86 + 51.60) = Rs. 137.60
Correct Answer: Rs. 10.40
Explanation:
S.I. on Rs. 240 for a given time = Rs. 20
S.I. on Rs. 240 for half the time = Rs. 10
? Rs. 10 is T.D. on Rs. 250
So, T.D. on Rs. 260 = Rs. (10 / 250) x 260 = Rs. 10.40
Comments
There are no comments.More in Aptitude:
Programming
Copyright ©CuriousTab. All rights reserved.