Question

Question 9: A file of cadets consisting of ten rows and five columns measures 420 m in
length along the direction of their marching. How much time (in hours and minutes)
would it take to march for a stretch of 3 km, if the stride of each cadet is 80 cm and he
takes 57 strides per minute?
a. 1 hr 10 min
b. 1 hr 20 min
c. 1 hr 24 min
d. 1 hr 15 min
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Answer 1

Step-by-step explanation:

1 hr 15 minutes is ur answer..,....