Question

When it is 1:00 a.m. in Toronto, it is 3:00 a.m. in Rio de Janiero, and when it is 10:00 a.m. in Rio de Janiero, it is 11:00 p.m. in Melbourne. You leave Toronto to fly to Rio de Janiero, but you accidentally left your watch on Melbourne time. Your watch says that you leave Toronto at 9:30 a.m. on Saturday. When you arrive in Rio de Janiero, the local time is 3:15 a.m. on Saturday. How long was your flight?
a.
8 hours, 45 minutes
b.
6 hours, 45 minutes
c.
4 hours, 45 minutes
d.
2 hours, 45 minutes


Please select the best answer from the choices provided

A
B
C
D

Answer 1

B

Work:
- Melbourne time = Toronto +15 hours (from given relations).
- Watch (Melbourne) shows departure 9:30 a.m. Saturday → actual Toronto departure = 9:30 a.m. −15 h = 6:30 p.m. Friday.
- Arrival is 3:15 a.m. Saturday in Rio. Rio = Toronto +2 h, so arrival in Toronto time = 3:15 −2 h = 1:15 a.m. Saturday.
- Flight time = 6:30 p.m. Friday → 1:15 a.m. Saturday = 6 hours 45 minutes.