Answer:
The New Index value is 1,140
Step-by-step explanation:
The computation of the new index value is shown below:
But before that we need to determine the following calculations
Market value yesterday is
= $15 × 600,000 shares + $18 × 500,000 shares + $60 × 200,000 shares
= $9,000,000 + $9,000,000 + $12,000,000
= $30,000,000
Now
Market value today is
= $20 × 600,000 shares + $21 × 500,000 shares + $55 × 200,000 shares
= $12,000,000 + $10,500,000 + $11,000,000
= $33,500,000
As we know that
Market value today ÷ Market value yesterday = Index today ÷ Index yesterday
So,
Index today = Market value today ÷ Market value yesterday × Index yesterday
= $33,500,000 ÷ $30,000,000 × 1,021
= 1,140
Hence, the New Index value is 1,140