50 with 3 pens and 4 pencils and Rs. 60 with 3 pens and 6 pencils but what is the price of a pencil?
Answers
Answer:
Price of pencil: x
Price of pen:y
₹50= 3y+4x ( EQUATION 1)
₹60=3y+6x (EQUATION 2)
Subtracting (EQUATION 1) from (EQUATION 2)
₹10=2x ( After subtraction)
x=10÷2=5
Therefore, price of a pencil is ₹5.
Given : Price of 3 pens and 4 pencils is 50 rupees.
Price of 3 pens and 6 pencils is 60 rupees.
To Find : Price of a pencil
Solution:
Price of 1 pen = x Rs
Price of 1 pencil = y Rs
Price of 3 pens and 4 pencils is 50 rupees.
=> 3x + 4y = 50 Eq1
Price of 3 pens and 6 pencils is 60 rupees.
=> 3x + 6y = 60 Eq2
Eq2 - Eq1
=> 2y = 10
=> y = 5
Hence Price of Pencil is 5 Rs
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