Cost of 2 pens, 5 pencils and 7 erasers is 37 rupees.Cost of 7 pens, 1 eraser and 2 pencils is 49 rupees.What is the cost of 9 pencils and 47 pens?*
Question
Solution 1
The problem can be solved using the method of simultaneous equations. Let's denote the cost of a pen as P, the cost of a pencil as C, and the cost of an eraser as E.
From the problem, we have the following two equations:
2P + 5C + 7E = 37 (equation 1)
7P + 2C + E = 49 (equation 2)
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