In an office, the working hours are 10:30 A.M. to 5:30 P.M. In between this time, 30 minutes are spent on lunch. Find the ratio of time spent in office to the time spent on lunch.
Avinash works in an office from 9:30 a.m. to 5 p.m. He takes a lunch break of 30 minutes in between. Find the ratio of his lunch break to hia working time.