Rule #1 - Name stuff! s = Total Time of the Flight
s/9read for the first 1/9 of the flight
Travelled s/9 Still to go s - s/9 = 8s/9
8s/15watched the film for the next 8/15 of the flight
Travelled s/9 + 8s/15 = 29s/45 Still to go s - 29s/45 = 16s/45
Watch this one. It does NOT say 3/4 of the trip. It's 3/4 or the remaining trip.He managed to sleep for 3/4 of the remaining time
(3/4)*(16s/45) = 4s/15
Travelled 29s/45 + 4s/15 = 41s/45 Still to go s - 41s/45 = 4s/45
This one's a little different, too. It's just 20 minutes.snacks, ...filled another 20 minutes
Travelled 41s/45 + 20 min Still to go 4s/45 - 20 min
s/45 = 4s/45 - 20 minthere was only 1/45 of the total flight time left.
Can you solve for 's'? This will give the total time for the trip. This will not answer the question. What does the problem statement ask?
The hardest part on this one is simply paying attention. One must read very carefully.