GRE Practice Question and Answer
8Q: The amount of water (in ml) that should be added to reduce 9 ml lotion, containing 50% alcohol, to a lotion containing 30% alcohol is ? 2926 05b5cc74fe4d2b4197774fae5
5b5cc74fe4d2b4197774fae5- 16 mltrue
- 211 mlfalse
- 315 mlfalse
- 49 mlfalse
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Answer : 1. "6 ml"
Explanation :
Answer: A) 6 ml Explanation: Let us assume that the lotion has 50% alcohol and 50% water.ratio = 1:1As the total solution is 9mlalcohol = water = 4.5mlNow if we want the quantity of alcohol = 30%The quantity of water = 70%The new ratio = 3:7Let x ml of water be addedWe get,4.54.5+x = 37=> x=6Hence 6ml of water is added.
Q: Statements : In a recent survey report, it has been stated that those who undertake physical exercise for at least half an hour a day are less prone to have any heart ailments. Conclusions : a) Moderate level of physical exercise is necessary for leading a healthy life.b) All people who do desk-bound jobs definitely suffer from heart ailments. 2919 05b5cc745e4d2b4197774fa31
5b5cc745e4d2b4197774fa31- 1Only a followstrue
- 2Both a & b followsfalse
- 3Only b followsfalse
- 4Neither a nor b followsfalse
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Answer : 1. "Only a follows"
Explanation :
Answer: A) Only a follows Explanation: The statement mentions that chances of heart ailments are greatly reduced by a regular half-hour exercise. So, a follows. However, it talks of only reducing the probability which does not mean that persons involved in sedentary jobs shall definitely suffer from heart ailments. So, b does not follow. Hence, concusion a only follows the given statement.
Q: Three persons P,Q and R wore shirts of White, Black and Blue colours (not necessarily in that order) and pants of Green, Red and White colours (not necessarily in that order). No persons wore shirts and pants of same colour. And further it is given that 1.A did not wear shirt of Black colour.2.B did not wear shirt of Blue colour.3.C did not wear shirt of White colour.4.A did not wear pants of Green colour.5.B wear pant of White colour. What were the colours of the pant and shirt wear by person A respectively? 2910 05b5cc777e4d2b419777500c5
5b5cc777e4d2b419777500c5- 1Green and Bluefalse
- 2White and Blackfalse
- 3Red and Whitetrue
- 4Green and Whitefalse
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Answer : 3. "Red and White"
Explanation :
Answer: C) Red and White Explanation:
Q: An alloy contains gold and silver in the ratio 5 : 8 and another alloy contains gold and silver in the ratio 5 : 3. If equal amount of both the alloys are melted together, then the ratio of gold and silver in the resulting alloy is ? 2908 05b5cc67be4d2b4197774c1eb
5b5cc67be4d2b4197774c1eb- 1113/108false
- 2105/103true
- 3108/115false
- 4103/113false
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Answer : 2. "105/103"
Explanation :
Answer: B) 105/103 Explanation: As given equal amounts of alloys are melted, let it be 1 kg. Required ratio of gold and silver = 513 + 58813 + 38 = 105103. Hence, ratio of gold and silver in the resulting alloy = 105/103.
Q: At what time will B catch up with A, if A starts from a place at 11.00 A.M. and travels at a speed of 3.5 kmph, B starts at 1.00 P.M. and travels with speeds of 1 kmph for 1 hour, 2 kmph for the next 1 hour, 3 kmph for the next 1 hour and so on. 2903 05b5cc715e4d2b4197774f409
5b5cc715e4d2b4197774f409- 18 : 47 pmfalse
- 26 : 40 pmfalse
- 38 : 42 pmfalse
- 47 : 40 pmtrue
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Answer : 4. "7 : 40 pm"
Explanation :
Answer: D) 7 : 40 pm Explanation: At 1 pm ... Distance between A and B = 2x3.5 = 7 kmsat 2 pm .....Distance between A and B = 7 + 3.5 - 1 = 9.5 kmsAt 3 pm ....Distance between A and B = 9.5 + 3.5 - 2 = 11 kms.......At 7 pm distance between A and B = 3 kms.From 7 pm to 8 pm, speed of A = 3.5 kmphspeed of B = 8 kmphRelative speed = 4.5 kmph Time taken by B to meet A = 3/4.5 hrs = 30/45 hrs = 120/3 mins = 40 mins. So meeting time is 7 : 40 PM.
Q: Mr. A, Miss B, Mr. C and Miss D are sitting around a table and discussing their trades. 1. Mr. A sits opposite to cook 2. Miss b sits right to the barber.3. The washer man is on the left of the tailor 4. Miss D sits opposite Mr. C What are the trades of A and B ? 2897 05b5cc741e4d2b4197774f9bd
5b5cc741e4d2b4197774f9bd- 1Tailor and Barberfalse
- 2Tailor and cooktrue
- 3Barber and cookfalse
- 4washer man and cookfalse
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Answer : 2. "Tailor and cook"
Explanation :
Answer: B) Tailor and cook Explanation: Clealry, C and D sit opposite to each other. So, if A sits opposite to cook, B shall be the cook.Now, B is to the right of barber. So, one of the rest, say C will be barber.Clealry, then D on the opposite side shall be washerman or tailor. But, washerman is left of tailor and D on the left of A.So, D is washerman and A is tailor. Thus, A and B are Tailor and Cook.
Q: System Study involves 2885 05b5cc69be4d2b4197774c7d9
5b5cc69be4d2b4197774c7d9- 1documenting the existing systemfalse
- 2identifying current deficiencies and establishing new goalsfalse
- 3study of an existing systemfalse
- 4All the abovetrue
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Answer : 4. "All the above"
Explanation :
Answer: D) All the above Explanation:
Q: At what time between 3 and 4 o’clock will the minute hand and the hour hand are on the same straight line but facing opposite directions ? 2885 05b5cc75ee4d2b4197774fcee
5b5cc75ee4d2b4197774fcee- 13:15 2/8false
- 23:49false
- 33:49 1/11true
- 43:51false
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Answer : 3. "3:49 1/11"
Explanation :
Answer: C) 3:49 1/11 Explanation: On straight line means 180 degree angle.180 = 11/2 min – 30 hrs180 = 11/2 m – 30 × 3180 = 11/2 m – 90(180 + 90) 2 = 11 mm = 540/11 = 49 1/11 minutes.