GATE Questions and Answers with Explanation

Q:

According to experts what percentage of trash is recyclable?

A) 16%	B) 36%
C) 72%	D) 90%

Answer & Explanation Answer: D) 90%

Explanation:

according_to_experts_what_percentage_of_trash_is_recyclable1556256889.jpg image

EPA - Environmental Protection Agency.

The EPA estimates that 85% - 90% of the waste is recyclable, but we only recycle about 30% - 40% of it.

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Filed Under: General Awareness
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5 4238

Q:

The average temperature of Monday to Wednesday was 37 C and of Tuesday to Thursday was 34 C. If the temperature on Thursday was 4/5 th of that of Monday, the temperature on Thursday was ?

A) 35 c	B) 36 c
C) 34 c	D) 32 c

Answer & Explanation Answer: B) 36 c

Explanation:

Monday + Tuesday + Wednesday = 37 x 3 -----------(1)
Tuesday + Wednesday + Thursday = 34 x 3---------(2)
Thursday = 4/5 of Monday ------------------(3)
subtract eqn (1) from (2) we get,
Thursday - Monday = -9
=> Monday - Thursday = 9.......(4)
From (3) & (4), we get

So,Thursday = 36 C

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Filed Under: Simplification
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3 4236

Q:

A Bus travels first half distance between two places with a speed of 40 kmph and the rest half distance with a speed of 60 kmph. The average speed of the Bus is ?

A) 48 kmph	B) 50 kmph
C) 46 kmph	D) 42 kmph

Answer & Explanation Answer: A) 48 kmph

Explanation:

we know that speed = distance traveled/time taken
let the total distance traveled by the car is 2x km.
then time taken by it to cover first half is x/60 hour.
and for second half is x/40 hour.
Then average speed= total distance travelled / total time taken.

i.e. $\frac{2 x}{[\frac{x}{60} + \frac{x}{40}]}$

=> $\frac{2 x}{\frac{5 x}{120}}$

= 48 kmph.

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Filed Under: Time and Distance
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1 4232

Q:

Dhoni ,Raina ,Kohli and Sikhar have all played 5 innings each and each scored 131 runs.The players Score Card is given below : 100,90,85,80,30,25,20,20,15,15,10,10,10,3,3,3,2,1,1,1.

Given hints are:

1. Dhoni & Raina have scored different runs in 4 innings however in one innings they have scored same runs.

2. Shikhar & Kohli have also scored different runs in 3 innings however their indivitual score is same throughout 2 innings(meaning each has scored same run twice in 2 innings).

3. Shikhar's highest score is greater than that of Kohli's highest score.

4. Only Shikhar has scored more than 1 run in each innings.

5. Raina's hiighest score is greater than that of Dhoni's highest score.

Questions :

1. Who scored century in one innings ?
2. Who scored 35 runs in 2 consecutive innings ?
3. Who scored 30 runs in one innings ?

Answer

Scores of individuals :

Dhoni= 80,30,10,10,1
Raina=100,25,3,2,1
Kholi=85,20,15,10,1
Shikhar=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

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Subject: Deriving Conclusions From Passages Exam Prep: TOEFL , GRE , GATE , CAT , Bank Exams , AIEEE
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3 4232

Q:

Add is to multiply as subtract is to

A) fraction	B) divide
C) decimal	D) None of the above

Answer & Explanation Answer: B) divide

Explanation:

Here if you observe, add and subtract are opposite in nature. Similarly, mutiply and divide are also opposite in nature.

Hence, Add : Multiply :: Subtract : Divide.

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Filed Under: Analogy
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3 4231

Q:

Which of the Phrases (1), (2), (3) and (4) given below should replace the phrases printed in bold in the sentence to make it grammatically correct.

They claim that their employees are highly committing and disciplined.

A) Have been highly committed	B) Have high commitments
C) Are highly committed	D) No correction required

Answer & Explanation Answer: C) Are highly committed

Explanation:

As per the rule of adverb, the adverb is followed by the third form of verb.

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Filed Under: Alphabet Test
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11 4227

Q:

There are n boxes and m fruits. If we put 3 fruits in each box 3 fruits will be excess. If we put 4 fruits in each box 1 box will be excess. Find number of boxes and fruits ?

A) 3 & 9	B) 6 & 19
C) 7 & 24	D) 5 & 18

Answer & Explanation Answer: C) 7 & 24

Explanation:

7 boxes & 24 Balls.
Let, n = No. of boxes ; m = No. of fruits
3n+3 = m---------->(1)
4(n-1)= m---------->(2)
=>4n-4 = 3n+3;
=>4n-3n = 4+3
n = 7
Put n=7 in eqn(1)
=> 3(7)+3 = m
21+3 = m
m = 24;

Number of boxes = 7 and fruits = 24

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Filed Under: Arithmetical Reasoning
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4 4225

Q:

Which statement best describes Arteries?

A) They have thin walls and transport blood away from the heart	B) They have thick walls and transport blood toward the heart
C) They have thin walls and transport blood toward the heart	D) They have thick walls and transport blood away from the heart

Answer & Explanation Answer: D) They have thick walls and transport blood away from the heart

Explanation:

Because arteries have to have thick walls for use of protection. Its when you get to veins where the walls get thinner. And the use of the heart is to pump blood to all of the cells and organs in the body so it would be to transport blood away from the heart.

i.e.

Arteries = Away from the Heart
Veins = Back to the Heart.

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Filed Under: Biology
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