Question

Taking the cost of pen to be $ x and the cost of pencil be $y , write a linear equation for “the cost of pencil is one third the cost of pen”. *

Answer 1

Answer:

Step-by-step explanation:

y=cost of pencil

x=cost of pen

so y=1/3 of x

so y=x/3

ans y=x/3

Answer 2

Answer:

Cost of one pen =Rs.x

Therefore cost of 3 pens=Rs.3x

Cost of one pencil=Rs.y

Therefore cost of 2 pencils =Rs.2y

Then according to question 3x+2y=Rs.34

solution