I have worked 70 hrs a week for 40 yrs, it wasn't a waste: Narayana Murthy

After saying that youngsters should work 70 hours every week, Infosys Co-founder Narayana Murthy has said he worked for 70 hours a week during his over 40-year-long professional life. "When we had a six-day week - till 1994 - I used to work at least 85 to 90 hours a week. That has not been a waste," he told ET.