Linear Programming Question 34

Question: In a test of Mathematics, there are two types of questions to be answered’short answered and long answered. The relevant data is given below
Type of questions Time taken to solve Marks Number of questions
Short answered questions 5 minute 3 10
Long answered questions 10 minute 5 14

The total marks is 100.Students can solve all the questions.To secure maximum marks, a student solves x short answered and y long answered questions in three hours, then the linear constraints except $ x\ge 0,\ y\ge 0 $ , are

Options:

A) $ 5x+10y\le 180 $ , $ x\le 10,\ y\le 14 $

B) $ x+10y\ge 180 $ , $ x\le 10,\ y\le 14 $

C) $ 5x+10y\ge 180 $ , $ x\ge 10,\ y\ge 14 $

D) $ 5x+10y\le 180 $ , $ x\ge 10,\ y\ge 14 $

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Answer:

Correct Answer: A

Solution:

Obviously $ x\le 10,y\le 14 $ and $ 5x+10y\le 180 $ .