Class 12 CBSE Applied Maths
Class 12 CBSE Applied Maths aims to develop an understanding of basic mathematical and statistical tools and their
applications in the field of commerce (business/ finance/economics) and social
sciences. Topics covered in Class 12th Applied Maths includes : Numbers, Quantification and
Numerical Applications, Algebra, Calculus, Probability Distributions , Inferential Statistics, Index Numbers and Time-based data , Financial Mathematics , Linear Programming.
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Q1. Three students Ram, Mohan and Ankit go to a shop to buy stationary. Ram purchases
2 dozen notebooks, 1 dozen pens and 4 pencils, Mohan purchases 1 dozen notebook, 6 pens
and 8 pencils and Ankit purchases 6 notebooks, 4 pens and 6 pencils. A notebook costs Rs 15,
a pen costs Rs 4.50 and a pencil costs Rs 1.50.
Let A and B be the matrices representing the number of items purchased by the three students
and the prices of the items respectively.
Based on the above information, answer the following questions:
(i) The order of matrix B representing the price of three items is
(a)3 x1 (b) 1x3 (c) 1x1 (d) 3x3
(ii) The order of matrix A representing items purchased by three students is
(a)1x3 (b) 2x3 (c) 3x3 (d) 3x1
(iii) The order of product matrix AB is
(a)2x2 (b) 3x3 (c) 3x1 (d) 1x3
(iv) The bill amount of Ram is
(a) Rs 360 (b) Rs 420 (c) Rs 219 (d) Rs 117
(v) The total bill amount of all three students is
(a) Rs 656 (b) Rs 675 (c) Rs 766 (d) Rs 756
Solution :
