Question

A CD of classical guitar music contains 5 songs. The length of each song is shown in the table; Track 1 is 6.5 minutes, Track 2 is 8 minutes, Track 3 is 3.93 minutes, Track 4 is 4.1 minutes, and Track 5 is 5.05 minutes: Part A between each song is a 0.05 minute break. How long is does it take to listen to the CD from the beginning of the first song to the end of the last song? Part B Juan wants to buy the CD from an internet music site. He downloads the CD onto a disc that can hold up to 60 minutes of music. How many more minutes of music can he still buy after downloading the CD?

Answer 1

Part A - 27.78 minutes. Add all the times together including the 0.05 break that is repeated four times.
Part B - 32.22 minutes. Subtract 27.78 from 60.

Answer 2

Part A)
`27.78\ min`

Part B)
`32.22\ min`

Explanation:

Part A)

Let

`t1=6.5\ min` ----> length song
`1`

`t2=8\ min` ----> length song
`2`

`t3=3.93\ min` ----> length song
`3`

`t4=4.1\ min` ----> length song
`4`

`t5=5.05\ min` ----> length song
`5`

`b=0.05\ min` -----> break between each song

we know that

The length of the CD is equal to

`(t1+t2+t3+t4+t5)+4(b)`

substitute the values

`(6.5+8+3.93+4.1+5.05)+4(0.05)=27.58+0.20=27.78\ min`

Part B)

Subtract the total length of the CD from
`60` minutes of music

so

`(60-27.78)=32.22\ min`