cost of 2 pens and 5 pencil is rupees 25 and cost of 2 pens and 3 pencils is rupees 19 considering the cost of 1 pen is rupees X and that of 1 pencil is rupees Y write the mathematical equation of these statements
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According to first condition
2x+5y=25. (1)
According to second condition
2x+3y=19. (2)
Substitute 1 by 2
2x+5y-2x-3y=25-19
2y=6
y=3
Putting value y = 3 in equation 1
2x+5×3=25
2x+15=25
2x=10
x=5
Answer:- Value of 1 pen and 1 pencil if ₹5 & ₹3 respectively.
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