A certain bookshop has 10 dozen chemistr...

A certain bookshop has 10 dozen chemistry books, 8 dozen physics books, 10 dozen economics books. Their selling prices are Rs80,Rs60 and Rs,40 each respectively. Find the total amount the bookshop will receive by selling all the books, using matrix algebra.

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The correct Answer is:

Rs. 20160

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A certain book shop has 10 dozen chemistry books, 8 dozen physics books, 10 dozen economics books. Their selling prices are Rs.80, Rs.60, Rs.40, each respectively. Using matrix algebra. Find the total value of the books in the shop.

A certain book shop has 10 dozen chemistry books, 8 dozen physics books, 10 dozen economics books. Their selling prices are Rs. 80, Rs. 60, Rs. 40 each respectively. Using matrix algebra, find the total value of the books in the shop.

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A publisher is planning to produce a new textbook. The fixed costs are Rs. 320000 per book. Besides that, he also spends another Rs. 31.25 in producing the book. The wholesale price is Rs. 43.75 per book. How many books must the publisher sell to break even,i.e., so that the cost of production will equal revenues?

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NCERT TELUGU-MATRICES-EXERCISE 3.2

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Find X, if Y=[(3,2),(1,4)] and 2X+Y=[(1,0),(-3,2)]
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Find x and y, if 2[(1,3),(0,x)]+[(y,0),(1,2)]=[(5,6),(1,8)]
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Find A^(2)-5A+6I, if A=[(2,0,1),(2,1,3),(1,-1,0)]
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If A=[(1,0,2),(0,2,1),(2,0,3)], prove that A^(3)-6A^(2)+7A+2I=0
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