Day rate of return on the index

Question

Problem:

A benchmark market value index is comprised of three stocks. Yesterday the three stocks were priced at $24, $32, and $75. The number of outstanding shares for each is 680,000 shares, 580,000 shares, and 280,000 shares, respectively. If the stock prices changed to $28, $30, and $77 today respectively,

Required:

Question: What is the 1-day rate of return on the index?

• 3.79%
• 2.79%
• 5.99%
• 4.47%

Note: Please provide full description.