DILR – Logical Reasoning – Set
The following set contains four questions related to Logical Reasoning. Choose the best answer to each question.
Healthy Bites is a fast food joint serving three items: burgers, fries and ice cream. It has two employees Anish and Bani who prepare the items ordered by the clients. Preparation time is 10 minutes for a burger and 2 minutes for an order of ice cream. An employee can prepare only one of these items at a time. The fries are prepared in an automatic fryer which can prepare up to 3 portions of fires at a time, and takes 5 minutes irrespective of the number of portions. The fryer does not need an employee to constantly attend to it, and we can ignore the time taken by an employee to start and stop the fryer; thus, an employee can be engaged in preparing other items while the frying is on. However fries cannot be prepared in anticipation of future orders.
Healthy Bites wishes to serve the orders as early as possible. The individual items in any order are served as and when ready; however, the order is considered to be completely served only when all the items of that order are served.
The table below gives the orders of three clients and the times at which they placed their orders;
Q1) Assume that only one client’s order can be processed at any given point of time. So, Anish or Bani cannot start preparing a new order while a previous order is being prepared.
At what time is the order placed by Client 1 completely served?
Q2) Assume that only one client’s order can be processed at any given point of time. So, Anish or Bani cannot start preparing a new order while a previous order is being prepared.
At what time is the order placed by Client 3 completely served?
Q3)Suppose the employees are allowed to process multiple orders at a time, but the preference would be to finish orders of clients who placed their orders earlier.
At what time is the order placed by Client 2 completely served?
Q4) Suppose the employees are allowed to process multiple orders at a time, but the preference would be to finish orders of clients who placed their orders earlier.
Also assume that the fourth client came in only at 10:35. Between 10:00 and 10:30, for how many minutes is exactly one of the employees idle?
Q1: Option (B)
Q2: Option (C)
Q3: Option (A)
Q4: Option (B)
After going through CAT 2017 – Logical Reasoning – Set, we can see that, the order of Client 1 has 1 burger, 3 portions of fries and one ice cream
Start the fries (They will take 5 mins). While the fries are in progress, one of them can make Ice Cream (2 mins) and another can start on Burger. After 5 mins are over, Burger still needs 5 minutes more. So, the order will be prepared in 5 + 5 = 10 mins in total. So, the order will be served at 10:10.
After going through CAT 2017 – Logical Reasoning – Set, we can see that, the order for client 1 got completed at 10:10.
The order for client will start at 10:10. Fries will take 5 mins and while the fries are getting prepared, Ice cream can be prepared by one of them. So, in total it will take 5 mins to process the order for Client 2.
We will start the order for Client 3 at 10:15. We will start with the fries first, while the fries are being prepared, one of them can start with Burger. Burger takes 10 mins, so after the fries are prepared, it will take additional 5 mins for the burger to get prepared. So, in total in total it will take 10 mins for the processing of the order of Client 3.
By 10:25, order of Client 3 will be prepared.
This timeline from CAT 2017 – Logical Reasoning – Set will help you understand
The order for Client 2 will be served by 10:10. Even, Client 1 will get its order by 10:10 (because of burger)
After going through CAT 2017 – Logical Reasoning – Set, we can see that,
As per the timeline, one person will be idle during 2-5, 10-15 and 15-17.
So, 3+5+2 = 10 minutes.
Exactly one person will be idle for 10 minutes.
CAT 2017 Questions from Logical Reasoning
Logical Reasoning – Set 1: A high security research lab requires the researchers to set a pass key sequence based on the scan of the five fingers of their left hands.
Logical Reasoning – Set 2: Eight friends: Ajit, Byomkesh, Gargi, Jayanta, Kikira, Manik, Prodosh and Tapesh are going to Delhi from Kolkata by a flight operated by Cheap Air.
Logical Reasoning – Set 3: In an 8 X 8 chessboard a queen placed anywhere can attack another piece if the piece is present in the same row, or in the same column or in any diagonal position in any possible 4 directions, provided there is no other piece in between in the path from the queen to that piece.
Logical Reasoning – Set 4: A tea taster was assigned to rate teas from six different locations – Munnar, Wayanad, Ooty, Darjeeling, Assam and Himachal.
Logical Reasoning – Set 5: Four cars need to travel from Akala (A) to Bakala (B). Two routes are available, one via Mamur (M) and the other via Nanur (N). The roads from A to M, and from N to B
Logical Reasoning – Set 6: A new airlines company is planning to start operations in a country. The company has identified ten different cities which they plan to connect through their network to start with.
Logical Reasoning – Set 7: In a square layout of size 5m × 5m, 25 equal sized square platforms of different heights are built.
Logical Reasoning – Set 8: There are 21 employees working in a division, out of whom 10 are special-skilled employees (SE) and the remaining are regular skilled employees (RE).
Other posts related to Data Interpretation and Logical Reasoning
Games and Tournaments for CAT 2017 Logical Reasoning – Part 1
Coded Inequality – Tips and Tricks to Solve Questions in Logical Reasoning
How to solve Logical Reasoning questions based on Ranking and Ordering
Logical Reasoning Basics – How to solve coin picking / matchstick related problems?
Application of Quantitative Ability Concepts in Logical Reasoning Puzzles and Data Interpretation Sets
Cube Based Puzzles in Logical Reasoning for CAT Exam Preparation
How to prepare for LRDI
How to prepare for Logical Reasoning
How to Prepare for Data Interpretation
Online Coaching Course for CAT Exam Preparation
a) 750+ Videos covering entire CAT syllabus
b) 2 Live Classes (online) every week for doubt clarification
c) Study Material & PDFs for practice and understanding
d) 10 Mock Tests in the latest pattern
e) Previous Year Questions solved on video