New Delhi, Sep 19 (ANI): Microsoft Co-Founder Bill Gates along with his wife Melinda Gates met Prime Minister Narendra Modi on Friday at his office in New Delhi to discuss the sanitation projects that his foundation has undertaken in India. He also met Urban Development Minister Venkaiah Naidu. Earlier in the day, Gates met Transport Minister Nitin Gadakari at his residence.The key areas of their discussion were rural development and sanitation. Gadkari had thanked Gates for his contribution and said that the poor people will definitely benefit from their foundation. Earlier, Gates praised India for the pioneering work in polio eradication and said the country's plan to achieve its target of reducing the newborn mortality rate to single digit before 2030 was possible.