Question

4 pens and 10 pencils together cost 107, while 8 pens and 6 pencils cost * 151. The cost of each (a). 4.50 (b) * 10.50 (c) 15.50 (d) *20.50 pen ​

Answer 1

Answer:

15.5

Step-by-step explanation:

let cost of pen as x and pencil as y

so the equation turns :

4x+10y=107  take as (1)

8x+6y=151     take as (2)

multiply 2nd equation with 5 and 1st equation with 3 and subtract (1) from (2)

to get 28x=434

now x=434/28

x=15.5 which is cost of pen