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Question 151

DMRC CRA 2020• Quantitative Aptitude

Find the area of the triangle whose vertices are (1, -1), (-4, 0) and (-2, -3)

  1. AOption (a)

    8.1

  2. BOption (b)

    4.9

  3. COption (c)

    7.2

  4. DOption (d)

    6.5

View answer & explanation

Correct answer

Answer: (a)A.

8.1

Explanation not yet available.

Question 152

DMRC CRA 2020• Quantitative Aptitude

Find X based on the following proportion.

X : 12 ∷ 16 : 24

  1. AOption (a)

    8

  2. BOption (b)

    12

  3. COption (c)

    3

  4. DOption (d)

    15

View answer & explanation

Correct answer

Answer: (a)A.

8

Explanation not yet available.

Question 153

DMRC CRA 2020• Quantitative Aptitude

Find the area of the sector of a circle with a radius of 2 cm and a central angle of 30°. 

  1. AOption (a)

    2.237 cm2

  2. BOption (b)

    1.233 cm2

  3. COption (c)

    2.134 cm2

  4. DOption (d)

    1.047 cm2

View answer & explanation

Correct answer

Answer: (a)A.

2.237 cm2

Explanation not yet available.

Question 154

DMRC CRA 2020• Quantitative Aptitude

How much water should be mixed in 39 litres of milk worth Rs. 6.00 per litre so that the resulting mixture is worth Rs. 4.50 per litre?

  1. AOption (a)

    13 litres

  2. BOption (b)

    14 litres

  3. COption (c)

    11 litres

  4. DOption (d)

    16 litres

View answer & explanation

Correct answer

Answer: (a)A.

13 litres

Explanation not yet available.

Question 155

DMRC CRA 2020• Quantitative Aptitude

Two men, A and B, start walking together from the same point and in the same direction along a 10 km long circular path. A walks 4 km and B walks 6 km in an hour. After a minimum of how many hours since the start of their journeys will they meet each other at the starting point?

  1. AOption (a)

    8

  2. BOption (b)

    4

  3. COption (c)

    5

  4. DOption (d)

    6

View answer & explanation

Correct answer

Answer: (a)A.

8

Explanation not yet available.

Question 156

DMRC CRA 2020• Quantitative Aptitude

Find the profit percentage if selling price is Rs. 90 and cost price is Rs. 45

  1. AOption (a)

    56%

  2. BOption (b)

    596%

  3. COption (c)

    100%

  4. DOption (d)

    364%

View answer & explanation

Correct answer

Answer: (a)A.

56%

Explanation not yet available.

Question 157

DMRC CRA 2020• Quantitative Aptitude

As is twice as efficient a workman as B. If they work together, they take 21 days to complete a task. How many days will A alone take to complete the same task?

  1. AOption (a)

    \(23\frac{1}{4}\)

  2. BOption (b)

    \(62\frac{1}{2}\)

  3. COption (c)

    \(53\frac{1}{4}\)

  4. DOption (d)

    \(31\frac{1}{2}\)

View answer & explanation

Correct answer

Answer: (a)A.

\(23\frac{1}{4}\)

Explanation not yet available.

Question 158

DMRC CRA 2020• Quantitative Aptitude

Solve the following

\(\frac{{\tan 26^\circ }}{{\cot 64^\circ ;}} = ?\)

  1. AOption (a)

    2√3

  2. BOption (b)

    1

  3. COption (c)

    5

  4. DOption (d)

    4

View answer & explanation

Correct answer

Answer: (a)A.

2√3

Explanation not yet available.

Question 159

DMRC CRA 2020• Quantitative Aptitude

A shopkeeper buys 124 eggs at 80 paise per egg. If 20 eggs are broken, and the shopkeeper sells the remaining eggs at Rs. 1.20 per egg, then find the profit percentage on the whole transaction?

  1. AOption (a)

    92.00%

  2. BOption (b)

    32.40%

  3. COption (c)

    50.00%

  4. DOption (d)

    25.80%

View answer & explanation

Correct answer

Answer: (a)A.

92.00%

Explanation not yet available.

Question 160

DMRC CRA 2020• Quantitative Aptitude

2 men and 2 boys can finish a task in 12 days, but 3 men and 6 boys can finish the same task in 6 days. In how many days can 2 men and 1 boy finish the same task?

  1. AOption (a)

    5

  2. BOption (b)

    7

  3. COption (c)

    \(14\frac{2}{5}\)

  4. DOption (d)

    9

View answer & explanation

Correct answer

Answer: (a)A.

5

Explanation not yet available.