CBSC 12th Mathematics Question Paper 2013 Free Download
CBSC Class 12th Mathematics Question Paper 2013, CBSC Delhi Class 12th (XII) 2013 Mathematics Question Paper CBSC Class XII Mathematics Question Paper 2013 outside Delhi Students Free Download CBSC 12th – XII Mathematics Question Paper for Foreign Students with Answers and Solution 2013 CBSC Board Exam Papers for Class 12 (XII) std CBSC 2013 Mathematics Question Bank with Full Details.
Time : 3 Hours
Maximum Marks : 100
1. If a young man drives his scooter at a speed of 25 km/hour, he has to spend Rs. 2 per km on petrol. If he drives the scooter at a speed of 40 km/hour, it produces more air pollution and increases his expenditure on petrol to Rs.5 per km. He has a maximum of Rs.100 to spend on petrol and travel a maximum distance in one hour time with less pollution. Express this problem as an LPP and solve it graphically. What value do you find here?
2. In a group of 400 people, 160 arc smokers and non-vegetarian, 100 are smokers and vegetarian and the remaining are non-smokers and vegetarian. The probabilities of getting a special chest disease are 35%, 20% and 10% respectively. A person is chosen from the group at random and is found to be suffering from the disease. What is the probability that the selected person is a smoker and non-vegetarian ? What value is reflected in this question?