In Coming Exams, CBSE will ask two Case Study Questions in the CBSE class 12 maths questions paper. Each theme will have five questions and students will have a choice to attempt any four of them.
Here are some example questions Based On Case Study Problems:
Question-1
Read the case study carefully and answer any four out of the following questions:
Three friends Ganesh, Dinesh, and Ramesh went for playing a Tug of war game. Team A, B, and C belong to Ganesh, Dinesh, and Ramesh respectively.
Teams A, B, C have attached a rope to a metal ring and are trying to pull the ring into their own area (team areas shown below).
Team A pulls with F1 = 4i + 0j KN
Team B → F2 = -2i+ 4j KN
Team C → F3 = -3i - 3j KN
Answer Key:
Question-2
Read the case study carefully and answer any four out of the following questions:
Three shopkeepers Ram Lal, Shyam Lal, and Ghansham are using polythene bags, handmade bags (prepared by prisoners), and newspaper's envelope as carry bags. It is found that the shopkeepers Ram Lal, Shyam Lal, and Ghansham are using (20,30,40), (30,40,20), and (40,20,30) polythene bags, handmade bags, and newspapers envelopes respectively. The shopkeeper's Ram Lal, Shyam Lal, and Ghansham spent ₹250, ₹270, and ₹200 on these carry bags respectively.
Answer Key:
Question-3
Read the case study carefully and answer any four out of the following questions:
Three friends Ravi, Raju, and Rohit were doing buying and selling stationery items in a market. The price per dozen of Pen, Notebook, and toys are Rupees x, y, and z respectively.
Ravi purchases 4 dozens of notebooks and sells 2 dozens of pens and 5 dozens of toys. Raju purchases 2 dozens of toys and sells 3 dozens of pens and 1 dozen of notebooks. Rohit purchases one dozen of pens and sells 3 dozens of notebooks and one dozen toys. In the process, Ravi, Raju, and Rohit earn ₹ 1500, ₹ 100, and ₹400 respectively.
Answer the following questions using the matrix method:
Answer Key:
Question-4
Read the case study carefully and answer any four out of the following questions:
Dinesh is having a jewelry shop at Green Park, Normally he does not sit in the shop as he remains busy in political meetings. The manager Lisa takes care of jewelry shop where she sells earrings and necklaces. She sells earrings for ₹ 30 and necklaces for 40. It takes 30 minutes to make a pair of earrings and 1 hour to make a necklace, and there are 10 hours a week to make jewelry. In addition, there are only enough materials to make 15 total jewelry items per week. The profit of 15 and 20 is made on each pair of earrings and a necklace respectively.
The graph of the equations formed is shown here:
Answer the following questions:
Answer Key:
Question-5
Read the case study carefully and answer any four out of the following questions:
A telephone company in a town has 500 subscribers on its list and collects fixed charges of 300 per subscriber per year. The company proposes to increases the annual subscription and it is believed that for every increase of 1 one subscriber will discontinue the service.
Answer Key:
21 April, 2021, 5:22 pm
21 April, 2021, 12:18 pm
20 April, 2021, 4:00 pm
20 April, 2021, 1:58 pm
20 April, 2021, 10:41 am
20 April, 2021, 9:15 am