Answer:
885.38
Explanation:
Market value yesterday = 37 x 420000 + 60 x 545000 + 70 x 693000 =
15540000 + 32700000 + 48510000=
96,750,000
Market value today = 37 x 420000 + 56 x 545000 + 74 x 693000 =
15540000 + 30520000 + 51282000=
97,342,000
Market value today / Market value yesterday = Index today / Index yesterday
Index today = Market value today / Market value yesterday x Index yesterday = 97,342 / 96,750 x 880 = 885.38
New Index value = 885.38