The cost of 2 pencils and 3 erasers is rupees 9 and the cost of 4 pencils and 6 erasers is rupees 18. Find the cost of each pencil and each eraser.
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Answer:
Step-by-step explanation:
Let the cost of one pencil =Rsx
and cost of one eraser =Rsy
According to the question
2x+3y=9... (1)
4x+6y=18
⇒2(2x+3y)=18
⇒2x+3y=9... (2)
As we can see from Eq. (1) and (2)
⇒ a1/a2 = b1/b2 = c1/c2
Given pair of linear equations has indefinitely many solutions.
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