Question

The cost of 2 books.6 notebooks and 3 pens
is 40rs. The cost of 3 books , 4 notebooks
and 2 pens is 35, while the cost of 5 books , 7 note books and 4 pense is rs61
Using these information and matrix method, find the cost of one book, onebnotebook and one pen separately​.

Answer 1

Answer:

cost of one book= 20 rs

cost of notebook= 40÷6 rs

cost of pen = 35÷2rs