HCL Placement: Sample Questions 19 - 21 of 57

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Question 19

Write in Short

Short Answer▾

If a = 2, b = 3, c = 6 then find the value of

Explanation

  • Here, a = 2, b = 3, c = 6
  • Let first term =
  • Substituting the values of a, b and c

  • Second term =
  • Substituting the values of a, b and c

  • Subtracting both the terms,

=

  • Taking LCM of 5 and 6, i.e.. 30

  • Value of is .

Question 20

Question

MCQ▾

A trader bought 10kg of apples for ₹ 405 out of which 1kg of apples was found to be rotten. If he wishes to make a profit of 10 % , at what rate should he sell the remaining apples per kg?

Choices

Choice (4)

a.

₹ 45

b.

₹ 50

c.

₹ 51

d.

₹ 49.50

Answer

a.

Explanation

  • Trader bought 10 kg of apples for ₹ 405.
  • So, cost of one kg of apple is = 40.5
  • Trader wants to make 10 % profit then he should sell the remaining apples at rate SP,
  • SP =
  • SP =
  • SP = 44.55
  • So, to make 10 % profit, trader should sell one kg of apple at ₹ 44 .

Question 21

Question

MCQ▾

HCL prototyping machine can make 10 copies every 4 seconds. At this rate, how many copies can the machine make in 6 minutes?

Choices

Choice (4)

a.

360

b.

900

c.

600

d.

240

Answer

b.

Explanation

  • 1 minute = 60 seconds
  • 6 minutes = seconds

= 360 seconds

  • In 4 seconds HCL prototype machine can make 10 copies
  • Then in 360 seconds HCL prototype machine makes x copies

  • HCL prototype can make 900 copies in 6 minutes.

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