The demand for a product is given by and its supply by

MATHEMATICS · Subjective · CBSE · Mathematics · Pair of Linear Equations in Two Variables · Pair of Linear Equations in Two Variables

Problem

The demand for a product is given by

p+2q=120

and its supply by

p-q=30

, where

p

is price (in rupees) and

q

is quantity (in kg). Find the equilibrium price and quantity.