Mrs Rao relies on Mr Chaudhary to get her husband's daily lunch delivered to Mumbai's financial district where he works.
That is about an hour away from her home - and looking after her new baby means she barely has time for herself, let alone find the time to deliver a tiffin, or lunchbox, to her husband's office.
That is where Mr Chaudhary comes in.
He has to deliver Mr Rao's home cooked meal to his office in town.
For this service, he charges her $5 (£2.70) a month.
He also delivers lunch to thousands of the city's professionals. He makes about $80 a month.
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