Answer:
$0.35
Explanation:
The computation of the price elasticity of demand using mid point formula is shown below:
= (change in quantity demanded ÷ average of quantity demanded) ÷ (percentage change in price ÷ average of price)
So, Change in quantity demanded would be
= Q2 - Q1
= 40 - 30
= 10
Now, Average of quantity demanded
= (40 + 30) ÷ 2
= 35
Change in price
= P2 - P1
= $35 - $15
= $20
And, the average of price would be
= ($35 + $15) ÷ 2
= $25
Cross price elasticity of demand = (10 ÷ 35) ÷ ($20 ÷ $25)
= 0.28 ÷ $0.8
= $0.35
