In the following questions use the fact that the elasticity ${?}^1$ of coffee is $E=1\mathrm{.}4.$

$($a$)$ If the price of coffee drops from $$11\mathrm{.}25$ to $$10\mathrm{.}50,$ does the demand for coffee increase or decrease?

$($b$)$ Estimate the percent change in the quantity demanded if the price of coffee drops from $$11\mathrm{.}25$ to $$10\mathrm{.}50.$

NOTE: Round your answer to at least one decimal place.

The percent change in the quantity demanded is approximately equal to $\%.$

ww$.$ers.usda.gov$/$data$-$products$/$commodity$-$and$-$food$-$elasticities, accessed June $2017.$