The price of 2 pens and 3 pencils is 86, the price of 4 pens and 1 pencil is 112. Find the price of a pen?

A) 25<

B) 18

C) 12

D) 15

Explanation:

let cost of 1 pen=x

cost of 1 pen=y

A.T.Q

2x+3y=86

4x+y=112

solve it by elimination

multiply eq 1st by 4 & eq 2nd by 2

8x+12y=344

8x+2y=224

10y=120

y=12

put value of y in 1st eq

2x+3y=86

2x+3(12)=86

2x+36=86

2x=86-36

2x=50

x=25