Answer
2
elastic
Work Step by Step
The percent change in quantity is
$p=\frac{100-80}{100}\times100=\frac{20}{100}\times100=20$
The percent change in price is
$p=\frac{11-10}{10}\times100=\frac{1}{10}\times100=10$
The elasticity of demand is
$E_{d}=\frac{20}{10}=2$
Since $E_d\gt1$ the demand is elastic.
