GATE Practice Question and Answer
8Q: Write 0.125 as a percent %? 1828 05b5cc6b3e4d2b4197774d42d
5b5cc6b3e4d2b4197774d42d- 112%false
- 212.5%true
- 313%false
- 413.5%false
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Answer : 2. "12.5%"
Explanation :
Answer: B) 12.5% Explanation: Here to convert 0.125 into % First convert to fractio Multiply and divide by 1000 => 0.125 x 10001000 = 1251000 = 18 => Now, in percentage18 x 100 = 12.5%
Q: What is 15 of 80 with simple method and examples? 1828 05b5cc6b3e4d2b4197774d46d
5b5cc6b3e4d2b4197774d46d- 112.5%false
- 218.75%true
- 316.55%false
- 417.80%false
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Answer : 2. "18.75%"
Explanation :
Answer: B) 18.75% Explanation: Given that to find 15 of 80 => What % of 80 is 15 Let it be 'p' => p% of 80 = 15 => p x 80100 = 15⇒p = 15 x 10080⇒p = 150080 = 18.75 Therefore, 15 is 18.75% of 80 => 18.75% of 80 = 15 Example:: Now, in the similar way we can find 15% of 80 =? => 15x80/100 = p => p = 4 x 3 = 12 Therefore, 15% of 80 = 12
Q: Sambhu buys rice at Rs. 10/kg and puts a price tag on it so as to earn a profit of 20%. However, his faulty balance shows 1000 gm when it is actually 800 gm. What is his actual gain percentage ? 1827 05b5cc709e4d2b4197774f299
5b5cc709e4d2b4197774f299- 150%true
- 225%false
- 375%false
- 460%false
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Answer : 1. "50%"
Explanation :
Answer: A) 50% Explanation: CP of 1000gm = Rs. 10SP of 800gm = Rs. 12SP of 1000gm =12x1000/800 = Rs. 15 Now take 1000gm as reference to calculate profit.Profit=SP-CP=15-10=Rs. 5Profit % = 5x100/10 = 50%
Q: A shopkeeper sells two articles at Rs.1000 each, making a profit of 30% on the first article and a loss of 20% on the second article. Find the net profit or loss that he makes ? 1827 05b5cc6e2e4d2b4197774ec20
5b5cc6e2e4d2b4197774ec20- 10.85 %false
- 20.95 %true
- 31.0 %false
- 41.3 %false
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Answer : 2. "0.95 %"
Explanation :
Answer: B) 0.95 % Explanation: SP of first article = 1000Profit = 30%CP = (SP)x[100/(100+P)] = 10000/13 SP of second article = 1000Loss = 20%CP = (SP)x[100/(100-L)] = 5000/4 = 1250 Total SP = 2000 Total CP = 10000/13 + 1250 = 2019.23 CP is more than SP, he makes a loss. Loss = CP-SP = 2019.23 - 2000 = 19.23Loss Percent = [(19.23)/(2019.23)]x100 = 0.95 %.
Q: Out of first 20 natural numbers, one number is selected at random. The probability that it is either an even number or a prime number is ? 1827 05b5cc6e0e4d2b4197774eb70
5b5cc6e0e4d2b4197774eb70- 116/19false
- 21false
- 33/2false
- 417/20true
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Answer : 4. "17/20"
Explanation :
Answer: D) 17/20 Explanation: n(S) = 20n(Even no) = 10 = n(E)n(Prime no) = 8 = n(P)P(E U P) = 10/20 + 8/20 - 1/20 = 17/20
Q: In a 48 ltr mixture, the ratio of milk and water is 5:3. How much water should be added in the mixture so as the ratio will become 3:5 ? 1825 05b5cc6c2e4d2b4197774dbff
5b5cc6c2e4d2b4197774dbff- 124 litfalse
- 216 litfalse
- 332 littrue
- 48 litfalse
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Answer : 3. "32 lit"
Explanation :
Answer: C) 32 lit Explanation: Given mixture = 48 lit Milk in it = 48 x 5/8 = 30 lit => Water in it = 48 - 30 = 18 lit Let 'L' lit of water is added to make the ratio as 3:5 => 30/(18+L) = 3/5 => 150 = 54 + 3L => L = 32 lit.
Q: Where does translation occur? 1824 05b5cc639e4d2b4197774ba67
5b5cc639e4d2b4197774ba67- 1Nucleusfalse
- 2Ribosomesfalse
- 3Cytoplasmtrue
- 4mitochondrionfalse
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Answer : 3. "Cytoplasm"
Explanation :
Answer: C) Cytoplasm Explanation: Right after that, the mRNA enters the cytoplasm through nuclear pores. There, it could be translated into proteins by ribosomes. This process is called translation. Translation occurs in the cytoplasm whereas transcription occurs in the nucleus.
Q: A teacher multiplies 987 by a certain number and obtains 556781 as her answer. If in the answer, both 6 and 7 are wrong but the other digits are correct, then the correct answer will be 1824 05b5cc754e4d2b4197774fb8b
5b5cc754e4d2b4197774fb8b- 1553681false
- 2555181false
- 3556581false
- 4555681true
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Answer : 4. "555681"
Explanation :
Answer: D) 555681 Explanation: Given number is 987 = 3 x 7 x 47. So, required number must be divisible by each one of 3, 7, 47. None of the numbers in 553681 and 555181 are divisible by 3. While 556581 is not divisible by 7.Correct answer is 555681.