Question

price of 2pens and 3 pencils is 86 ,the price of 4 pens and 1 pencil is 112 find the.price of a pen​

Answer 1

Step-by-step explanation:

let price of one pencil =x $ and price of one pen is y $

2x+ 3y= 86 and x+ 2y =112

so, guys make a graph

from graph we get x=5 x=10

therefore cost of one pencil =$5 one pen $=10

hey guys I hope you are sure this answer so please like it.

Answer 2

Step-by-step explanation:

given-

cost of 2 pens and 3 pencils= 86

cost of 4 pens and 1 pencil=112

Now,

to find- the price of a pen

let pen be =x

and pencil be =y

so, 2x+3y=86.....(i)

4x+y= 112....(ii)

by eq. (i)

x=86-3y/2 put in eq (ii) value of x

4(86-3y/2)+y=112

2(86-3y)+y=112

172-6y+y=112

172-5y=112

-5y=112-172

-5y=-60

y=12

then price of pen

since.x=86-3y/2

we put the value of y

x=86-3(12)/2

x= 86-36/2

x= 86-18

x=68