Question

My friend Rita has bought 5 pens and 3 pencils at Rs. 34 from the book -shop nearby our school . But Sumita has bought 7 pens and 6pencils at Rs. 53 at the same rate and from the same shop . I write by calculating the price of each pen and pencil by framing simultaneous equations.​

Answer 1

let the value of pens be x and pencils be y

then,

A/q

5x+3y=rs34. eq 1

7x+6y=rs 53. eq 2

multiplying eq 1 with2 we have

10x+6y=68 eq 3....

now subtracting eq 3with 2 we have...

10x+6y=68

7x+6y=53

3x=15

x=5

now finding value of y

putting value of x in eq 2

7*5+6y=53

35+6y =53

6y=18

y=3

Answer 2

Please see the attachment

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