A train timetable must be compiled for various days of the week so that two trains twice a day depart for three days, one train daily for two days, and three trains once a day for two days. How many different timetables can be compiled?

Q. Barry trains for $15$ minutes in a day for the triathlon. He trains for $3$ days a week. How much time in a week does Barry invest in the training?

Q. Murphy trains for $7$ hours every day of the week. Fenix trains for $10$ hours for $5$ days in a week. Who spends more time training?

Q. Six trains run from Bangalore to Chennai every week. The train numbers are 151, 152, 153, 154, 155 & 156. Train No: 151 runs on all days except Monday and Wednesday. Train no: 152 runs on all days except Tuesday and Thursday. Train no: 153 runs on all the days on which 152 doesn’t run. Train no: 154 runs along with 152 except Monday and Saturday. Train no: 155 runs on all the days on which 154 doesn’t run except Tuesday and Thursday. Train no: 156 runs alternately the whole week starting from Monday. If a person has to go to Chennai two days a week, which two days should he/she choose to have highest frequency of trains on those days?

Q. Annie and Remy go to a gym. In $5$ days, Annie trains for a total of $40$ hours. In $3$ days, Remy trains for a total of $21$ hours. Who spent less time in a day training at the gym each day?

Q. Tuffy and Luke go to a training camp. In $5$ days, Tuffy trains for $30$ hours in total. In $3$ days, Luke trains for $15$ hours in total. Who spends less time training at the camp per day?