Answer:
Elasticity coefficient = 0.5
Step-by-step explanation:
Elasticity coefficient = percentage change in quantity demanded / percentage change in price
percentage change in price if gasoline = 20%
percentage change in quantity demanded = 10%
Elasticity coefficient = percentage change in quantity demanded / percentage change in price
= 10% / 20%
= 1/2
= 0.5
Elasticity coefficient = 0.5