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timurjin [86]
3 years ago
7

On the album 1989 by Taylor swift, Blank space is 12 seconds longer than shake it off. If the combined time of the two songs is

7 minutes and 30 seconds, how long is Shake It Off? Give your answer in minutes and seconds.
Mathematics
2 answers:
Levart [38]3 years ago
7 0

Answer:

Givens:

  • Blank Space is 12 sec longer than Shake It Off.
  • The duration combined is 7 minutes and 30 seconds, which is 420 seconds.

Lest's call B Blank Space and S Shake it Off, the relations would be

B=12+S\\B+S=420

Now, we replace the first equation into the second equation and solve for S:

12+S+S=420\\2S=420-12\\2S=408\\S=\frac{408}{2}=204

Then, we replace this value into the first equation

B=12+S\\B=12+204=216

This means that Shake It Off is 204 seconds long and Blank Space is 216 seconds long.

<h3> Therefore, if we express in minutes and seconds, we would have:</h3>

204sec\frac{1min}{60sec}=3.4min=3 \ min \ and \  24 sec

216sec\frac{1min}{60sec}=3.6 min=3 \ min \ and \ 36  sec

WARRIOR [948]3 years ago
3 0
3 minutes and 36 seconds is the length of "Shake it off" by Taylor swift.

Source: Wikipedia
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