Posted by nickky on .
the first of two films lasted 9 minutes less than twice as long as the second. the combined length of the two films plus a 5minute break between them was 260 minutes. how long was the first film?

algebra 
Reiny,
length of second film  x minutes
length of first film  2x9 minutes
x + 5 + 2x9 = 260
3x = 264
x=88
first film was 2(88)9 or 167 minutes
check:
88 + 5 + 167 = 260 
algebra 
Yonatan,
If you wanted to find the second one what would you do???

pre algebra 
secret,
take the total minutes of the first and second movies plus the five minute break, and subtract the time of the first movie added to the five minute break. the answer is the time of the second movie.