Given, percentage change in quantity supplied =10%
P=Rs.10;P1=Rs.12;△P=P1−P=Rs.12−Rs.10=Rs.2
Percentage change in price =△PP×100
=210×100=20%
Price elasticity of supply (ES)=Percentage change in quantity suppliedPercentage change in price
=10%20%=0.5
Price elasticity of supply =0.5.