Answer: 210 beats
Step-by-step explanation:
Given: A song has 28 beats in 4 seconds.
To find the rate of beats in song we need to divide 28 by 4, we get
⇒ Beats in each second of song=[tex]\frac{28}{4}=7\text{ beats}[/tex]
To find the number of beats in 30 seconds, we need to multiply 30 to the rate of beats, we get
⇒Beats in 30 seconds of song=[tex]7\times30=210\text{ beats}[/tex]
Hence, there are 210 beats in 30 seconds of song.
