SOLUTION: Roscoe must play 24 commercials during his 1-hr radio show. Each commercial is either thirty seconds or sixty seconds long. If the total commercial time during that hour is 16 minu
Algebra.Com
Question 1002528: Roscoe must play 24 commercials during his 1-hr radio show. Each commercial is either thirty seconds or sixty seconds long. If the total commercial time during that hour is 16 minutes, how many commercials of each type does Roscoe play?
Answer by mananth(16946) (Show Source): You can put this solution on YOUR website!
x= commercials of 30 sec
y= commercials of 60 sec kid ticket
Total comercials
1 x + 1 y = 24 .............1
Total value
30 x + 60 y = 960 .............2
Eliminate y
multiply (1)by -60
Multiply (2) by 1
-60 x -60 y = -1440
30 x + 60 y = 960 ( 16 mins = 960 sec)
Add the two equations
-30 x = -480
/ -30
x = 16
plug value of x in (1)
1 x + 1 y = 24
16 + y = 24
y = 24 -16
y = 8
y = 8
x= 16 commercials of 30 sec
y= 8 commercials of 60 sec
m.ananth@hotmail.ca
RELATED QUESTIONS
Roscoe must play 27 commercials during his 1-hr radio show. Each commercial is either... (answered by macston)
a disc jockey must play 14 commercial spots during 1 hour of a radio show. Each... (answered by mangopeeler07)
A disc jockey must play 16 commercial spots during 1 hour of a radio show. Each... (answered by stanbon)
A disc jockey must play 16 commercial spots during 1 hour of a radio show. Each... (answered by richwmiller,Stitch)
A disc jockey must play 14 commercial spots during 1 hour of a radio show. Each... (answered by stanbon)
Rudy must play 12 commercials his 1-hr radio show Each commercial is either 30 sec or 60... (answered by stanbon)
Solve.
Rudy must play 12 commercials during his 1-hr radio show. Each commercial is... (answered by checkley71)
Rudy must play 12 commercials during his 1-hr radio show. Each commercial is either 30... (answered by mducky2)
Rudy must play 12 commercials during his 1-hr radio show. Each commercial is either 30... (answered by richwmiller)