Answer: 36 minutes
Explanation:
The formula to find the speed is given by :-
![\text{Speed}=\frac{\text{Distance}}{\text{Time}}](https://img.qammunity.org/2019/formulas/mathematics/college/x5e0ljds2gmypf628mg93t0zdg6udj1bzj.png)
Given : A man walks at the rate of 2 feet per second .
Distance covered by him = 4320 feet
Let t be the time taken by him to walk 4320 feet, then we have
![2=(4320)/(t)\\\\\Rightarrow\ t=(4320)/(2)=2160\text{ seconds}](https://img.qammunity.org/2019/formulas/mathematics/college/2ij83qbe3fnj82heum58od09yf0eihqrt7.png)
Since 1 minute = 60 seconds
Then ,
![t=(2160)/(60)=36\text{ minutes}](https://img.qammunity.org/2019/formulas/mathematics/college/vnk7sqdnpnehbqmyf52fcy33tscawepsjf.png)
Hence, it will take him 36 minutes to walk 4320 feet .