CDS I 2018 Elementary Mathematics Previous Year Paper (04-Feb-2018)

Question 1

A man undertakes to do a work in 150 days. He employs 200 men. He finds that only a quarter of the work is done in 50 days. How many additional men should he employ so that the whole work is finished in time?

Accepted Answer

100

Answer

75

Answer

85

Answer

120

Question 2

A train moving with a speed of 60 km per hour crosses an electric pole in 30 seconds. What is the length of train in meters?

Accepted Answer

500

Answer

300

Answer

400

Answer

600

Question 3

Rs. 120 is distributed among A, B and C so that A&rsquo;s share is Rs. 20 more than B&rsquo;s and Rs. 20 less than C&rsquo;s. What is the B&rsquo;s share?

Accepted Answer

Rs. 20

Answer

Rs. 10

Answer

Rs. 15

Answer

Rs. 25

Question 4

In the following table of inverse variations, what are the values of A, B and C respectively?M 15 -6 2 C N -4 A B 60

Accepted Answer

10, -30, -1

Answer

10, -1, 30

Answer

-30, 10, -1

Answer

-1, -30, 10

Question 5

A person borrows Rs. 5000 at 5% rate of interest per annum and immediately lent it at 5.5%. After two years he collected the amount and settled his loan. What is the amount gained by him this transaction?

Accepted Answer

Rs. 50

Answer

Rs. 25

Answer

Rs. 100

Answer

Rs. 200

CDS I 2018 Elementary Mathematics Previous Year Paper (04-Feb-2018)

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