The cost of 5 pencils and 6 erasers is 9 and
the cost of 3 pencils and 2 erasers is 5.
Find the cost of each pencil and each eraser.
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The cost of 5 pencils and 6 erasers is 9 and
the cost of 3 pencils and 2 erasers is 5.
Find the cost of each pencil and each eraser.
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Answer:
Let cost of pencil be x and eraser be y
5x+6y= 9
(3x+2y=5 )×3= 9x+ 6y= 15
Subtract 1st from final. 4x=4 ,x=1. hence cost of pencil is 1
Put x in 1st equation, and get y..that will be cost of each eraser.