Suppose you decrease the price for tickets to your local theater from $$15$ to $$5.$ As a

result, you expect that ticket sales will increase from $300$ tickets to $500$ tickets. Which of

the following is the best estimate of the own price elasticty of demand for your theater

tickets?

$-1\mathrm{.}33$

$-0\mathrm{.}75$

$-0\mathrm{.}50$

$-2\mathrm{.}00$