After failing to hold on to opening gains, markets today ended at nearly a one-month low. After mounting to 20,000, will it be a difficult journey for Nifty to 21,500? Centrum Broking's Nischal Maheshwari shares his views. Will crude oil prices touch the $100/bbl mark soon? The government says it's fully prepared to implement 28% GST on online gaming from October 1. Listen in to the CBIC Chairman. For more news and updates, tune in to Let's Talk Business.