IIT JEE Practice Question and Answer
8Q: A quantity of tea is sold at Rs. 5.75 per kilogram. The total gain by selling the tea at this rate is Rs. 60. Find the quantity of tea being sold if a profit of 15% is made on the deal ? 1315 05b5cc70ee4d2b4197774f332
5b5cc70ee4d2b4197774f332- 172 kgsfalse
- 280 kgstrue
- 376 kgsfalse
- 484 kgsfalse
- Show AnswerHide Answer
- Workspace
- SingleChoice
Answer : 2. "80 kgs"
Explanation :
Answer: B) 80 kgs Explanation: Say total cost price of tea is x.Then total profit at a rate of 15% is = (15x/100)According to question,15x/100 = 60so x = 400C.p of the tea is Rs. 400.so total selling price will be = (400+60) = Rs.460so the quantity of the tea will be = (460/5.75) = 80kg.
Q: Leakage of which of the following gases caused the Bhopal gas tragedy ? 1519 05b5cc70be4d2b4197774f325
5b5cc70be4d2b4197774f325- 1Carbon monoxidefalse
- 2Methyl isocyanatetrue
- 3Nitrous oxidefalse
- 4Hydrogen sulphidefalse
- Show AnswerHide Answer
- Workspace
- SingleChoice
Answer : 2. "Methyl isocyanate"
Explanation :
Answer: B) Methyl isocyanate Explanation:
Q: Which one of the following is used to induce artificial rain ? 2446 05b5cc70be4d2b4197774f32a
5b5cc70be4d2b4197774f32a- 1Potassium Nitratefalse
- 2Ammonium chloridefalse
- 3Calcium carbonatefalse
- 4Silver lodidetrue
- Show AnswerHide Answer
- Workspace
- SingleChoice
Answer : 4. "Silver lodide"
Explanation :
Answer: D) Silver lodide Explanation:
Q: " World Water Day " is celebrated on _____ 1386 05b5cc70be4d2b4197774f320
5b5cc70be4d2b4197774f320- 123 rd Marchfalse
- 224 th Marchfalse
- 322 nd Marchtrue
- 421 st Marchfalse
- Show AnswerHide Answer
- Workspace
- SingleChoice
Answer : 3. "22 nd March"
Explanation :
Answer: C) 22 nd March Explanation:
- Show AnswerHide Answer
- Workspace
- SingleChoice
Answer :
Explanation :
Scores of individuals : Dhoni= 80,30,10,10,1Raina=100,25,3,2,1Kholi=85,20,15,10,1Shikhar=90,20,15,3,3 Above combination satisfies all conditions given in the question. Answer 1) Raina Answer 2) Kohli and Shikhar Answer 3) Dhoni
Q: Ram sell his goods 25% cheaper than Shyam and 25% dearer than Bram. How much % is Bram's good cheaper than Shyam ? 1791 05b5cc70be4d2b4197774f2f6
5b5cc70be4d2b4197774f2f6- 160%false
- 240%true
- 350%false
- 430%false
- Show AnswerHide Answer
- Workspace
- SingleChoice
Answer : 2. "40%"
Explanation :
Answer: B) 40% Explanation: Lets say shyam sells at 100, Since Ram sells 25% cheaper than Shyam, Therefor Ram sells at less than 25% of100 or 75 rs. Ram sells 25% dearer than Bram or 125% of Ram =100% of Bram or 125% of x (say x price of bram )=75rs.or 100% of x =60rs.hence price of bram is 60rs. now Bram's good is cheaper than Shyam's as (100-60)x100/100% or 40%. Hence Brams Good is 40% cheaper than that of Shyam's good.
Q: What is the next number in this series ? 4, 6, 12, 18, 30, 42, 60, ? 1188 05b5cc70be4d2b4197774f2f0
5b5cc70be4d2b4197774f2f0- 171false
- 272true
- 373false
- 469false
- Show AnswerHide Answer
- Workspace
- SingleChoice
Answer : 2. "72"
Explanation :
Answer: B) 72 Explanation: With close observation, you will note that each number in the list is in the middle of two prime numbers. Thus: 4 is in the middle of 3 and 5, 6 is in the middle of 5 and 7, 12 is in the middle of 11 and 13, 18 is in the middle of 17 and 19, 30 is in the middle of 29 and 31. 42 is in the middle of 41 and 43, 60 is in the middle of 59 and 61. Therefore, the next number would be the one that is in the middle of the next two prime numbers, which is 72 (which is in the middle of 71 and 73).
Q: Three friends, P, Q and R started a partnership business investing money in the ratio of 5 : 4 : 2 respectively for a period of 3 years. What is the amount received by P as his share in the total profit ? a. Total amount invested in the business in Rs. 22,000. b. Profit earned at the end of 3 years is 3/8 of the total investment. c. The average amount of profit earned per year is Rs. 2750. 2960 05b5cc70be4d2b4197774f2e1
5b5cc70be4d2b4197774f2e1- 1Only c is sufficientfalse
- 2Both a & b are sufficientfalse
- 3Both A & B gives resulttrue
- 4Nonefalse
- Show AnswerHide Answer
- Workspace
- SingleChoice
Answer : 3. "Both A & B gives result"
Explanation :
Answer: C) Both A & B gives result Explanation: a and b give, profit after 3 years = Rs.(3/8 x 22000) = Rs.8250. From c also, profit after 3 years = Rs. (2750 x 3) = Rs. 8250. ∴ P's share = Rs.(8250 x 5/11) = Rs. 3750. Thus, (either C is redundant) or (a and b are redundant).