Aptitude [TCS Placement]: Sample Questions 130 - 132 of 174

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Question 130

Aptitude
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Short Answer▾

Some work is done by two people in 24 minutes. One of them can do this work alone in 40 minutes. How much time does the second person take to do the same work?

Explanation

  • Let one person takes x minutes to complete a work and second person takes y minutes to complete the same work individually.
  • When they both work together it took 24 minutes to complete the work.
  • Let x = 40

  • So, second person will need 60 minutes to complete the same work.

Question 131

Aptitude
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I lost ₹ 68 in two races. My second race loss is ₹ 6 more than the first race. My friend lost ₹ 4 more than me in the second race. What is the amount lost by my friend in the second race?

Explanation

  • In two races I lost 68 ₹
  • Let in first race I lost x ₹ and in second race I will lose ₹ as it is given that I lose 6 ₹ more in second race compared to first race.

  • I lost 31 ₹ in first race and ₹ in second race.
  • My friend lost 4 ₹ more than me in second race and we are asked to find this amount.
  • So, my friend will lose ₹ in second race.

Question 132

Aptitude
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Short Answer▾

In a class there are 60 % of girls of which 25 % poor. What is the probability that a poor girl is selected is leader?

Explanation

  • Assume total number of students in the class = 100
  • Then Girls
  • Poor girls
  • We are asked to find the probability of a poor girl being selected as leader.
  • It will be,

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