In order to compare both numbers, we must convert the seconds into minutes. Since 1 minute has 60 seconds, we can state the following rule of three:
[tex]\begin{gathered} 1\text{ minute --------- 60 seconds} \\ \text{ x ---------- 1500 seconds} \end{gathered}[/tex]Then, by croos-multiplying our numbers, we have
[tex]60\cdot x=(1\text{ minute)( 1500 seconds)}[/tex]Then, by dividing both sides by 60, we get
[tex]\begin{gathered} x=\frac{(1\text{ minute)( 1500 seconds)}}{(\text{ 60 seconds)}} \\ x=25\text{ minutes} \end{gathered}[/tex]Therefore, by comparing 25 minutes for the violin with 28 minutes for the piano, the answer is: the piano