IIT JEE Practice Question and Answer
8Q: The average temperature for Monday, Tuesday, Wednesday and Thursday was 48 degrees and for Tuesday, Wednesday, Thursday and Friday was 46 degrees. If the temperature on Monday was 42 degrees. Find the temperature on Friday ? 2321 05b5cc6e7e4d2b4197774ed83
5b5cc6e7e4d2b4197774ed83- 134true
- 236false
- 338false
- 440false
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Answer : 1. "34"
Explanation :
Answer: A) 34 Explanation: M + Tu + W + Th = 4 x 48 = 192Tu + W + Th + F = 4 x 46 = 184M = 42Tu + W + Th = 192 - 42 = 150F = 184 – 150 = 34
Q: The sale price of an article including the sales tax is Rs. 616. The rate of sales tax is 10%. If the shopkeeper has made a profit of 12%, then the cost price of the article is : 2104 05b5cc6e7e4d2b4197774ed88
5b5cc6e7e4d2b4197774ed88- 1Rs. 560false
- 2Rs. 530false
- 3Rs. 500true
- 4Rs. 514false
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Answer : 3. "Rs. 500"
Explanation :
Answer: C) Rs. 500 Explanation: 110% of S.P. = Rs. 616 S.P. = (616 x 100)/110 = Rs. 560 C.P = (110 x 560)/112 = Rs. 500
Q: If Rs. 782 be divided into three parts, proportional to 1/2:2/3:3/4, then the first part is: 2107 05b5cc6e7e4d2b4197774ed7e
5b5cc6e7e4d2b4197774ed7e- 1Rs. 408false
- 2Rs. 204true
- 3Rs. 412false
- 4Rs. 220false
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Answer : 2. "Rs. 204"
Explanation :
Answer: B) Rs. 204 Explanation: Given ratio = 1/2:2/3:3/4 = 6:8:9 1st part = 782 x 6/23 = Rs. 204.
Q: Twenty times a positive integer is less than its square by 96. What is the integer ? 1701 05b5cc6e7e4d2b4197774ed74
5b5cc6e7e4d2b4197774ed74- 142false
- 236false
- 348false
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Answer : 4. "24"
Explanation :
Answer: D) 24 Explanation: Let the integer be x. Then, x2 - 20x = 96 (x + 4)(x - 24) = 0 x = 24
Q: A train sets off at 3 p.m. at the speed of 70 kmph. Another train starts at 4:30 p.m. in the same direction at the rate of 85 kmph. At what time the trains will meet ? 2333 05b5cc6e7e4d2b4197774ed79
5b5cc6e7e4d2b4197774ed79- 110:10 pmfalse
- 29:50 pmfalse
- 311:30 pmtrue
- 410:30 pmfalse
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Answer : 3. "11:30 pm"
Explanation :
Answer: C) 11:30 pm Explanation: Distance = 70 x 1 ½ = 105 km Relative Speed = 85 – 70 = 15 Time = 105/15 = 7 hrs 4:30 + 7 hrs = 11.30 p.m.
Q: A is two years older than B who is twice as old as C. If the total of the ages of A, B and C be 27, then how old is B ? 1482 05b5cc6e7e4d2b4197774ed6f
5b5cc6e7e4d2b4197774ed6f- 110 yrstrue
- 211 yrsfalse
- 312 yrsfalse
- 413 yrsfalse
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Answer : 1. "10 yrs"
Explanation :
Answer: A) 10 yrs Explanation: Let C's age be x years. Then, B's age = 2x years. A's age = (2x + 2) years. (2x + 2) + 2x + x = 27 5x = 25 => x = 5 Hence, B's age = 2x = 10 years.
Q: A class is 6 meters 24 centimeters in length and 4 meters 32 centimeters in width. Find the least number of square tiles of equal size required to cover the entire floor of the class room ? 1593 05b5cc6e7e4d2b4197774ed6a
5b5cc6e7e4d2b4197774ed6a- 1115false
- 2117true
- 3116false
- 4114false
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Answer : 2. "117"
Explanation :
Answer: B) 117 Explanation: Length = 6 m 24 cm = 624 cmWidth = 4 m 32 cm = 432 cmHCF of 624 and 432 = 48Number of square tiles required = (624 x 432)/(48 x 48) = 13 x 9 = 117.
Q: A is sister of B who is mother of C who is mother of D. E is the grand mother of D. Then how C is related to E ? 1456 05b5cc6e5e4d2b4197774ed60
5b5cc6e5e4d2b4197774ed60- 1Sisterfalse
- 2Daughterfalse
- 3Motherfalse
- 4Daughter-in-lawtrue
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Answer : 4. "Daughter-in-law"
Explanation :
Answer: D) Daughter-in-law Explanation: GM GMA ---- B ---- E | | C | | D (Grand son or daughter)