5 pens and 6 pencils together cost RS 9 and 3 pens and 2 pencils cost RS 5 .find the cost of 1 pen and 1 pencil.
Answers
Answered by
1
Answer:
therefore cost of pen is RS 1. 15 and that of pencils is RS 0. 25
Answered by
3
Answer:
Step-by-step explanation:
Let the cost of 1 pen be x .
Let the cost of 1 pencil be y .
So ,
5x+6y=9......(1)
3x+2y=5......(2)
From 1 ,
x = 9-6y/5.....(3)
Placing (3) in (2) ,
3(9-6y/5) +2y = 5
Or , 27-18y/5 +2y =5
Or , -18y+10y=25-27
Or , 8y=2
Or , y= 0.25
Now , placing y=0.25 in (2)
So , x = 1.15
Hope it helps you .
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