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CAT DI LR section has become increasingly tough beginning from 2015. However, Understanding the basics of Bar graphs, Pie Charts, Multiple graphs, Line Graphs etc forms an integral part of solving tougher CAT level DI LR questions for the CAT Exam. This question is from CAT 2017 Slot 1 CAT DILR.

CAT DILR : 2017 slot 1 questions

Fast Food Joint

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 fries at a time, and take 5 minutes irrespective of the number of portions. The fryer does not need an employee to constantly attend to it, and we can ignore 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 orders 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:

CAT DI LR 2017 Slot 1

Question 3: 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?

  1. 10:10
  2. 10:12
  3. 10:15
  4. 10:17

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Explanatory Answer

Method of solving this Question on CAT DILR

General Solution

Client 1: 1 burger, 3 portions of fries, 1 order of ice cream

CAT DI LR 2017 Slot 1

Can get completed by 10:10. But Bani is free by 10:02 as the fries can run on Autopilot

Client 2: Order of 2 fries and one ice cream

CAT DI LR 2017 Slot 1

This can also get get completed by 10:10. Bani can keep second set of fries and handle ice-cream also.

The question is "At what time is the order placed by client 2 completely served?"

Hence, the answer is "10:10".

Choice B is the correct answer.

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