Determine price elasticity when demand rises

When the quantity of scuba lessons demanded through tourists in Hawaii increases from 800 to 1,000 weekly while the price falls from $60 to $40 per session, in that case the price elasticity of tourist demands for scuba lessons is: (1) 0.444. (2) 1.800. (3) 0.556. (4) 1.111. (5) 5.555.

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