Ten people can dig 2 acres of land in 7 days. How long will 8 people working at half the rate of the first group take to dig 6 a
1 answer:
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Answer:
600 mph
Step-by-step explanation:
Given that,
Distance covered by ball, d = 5 miles
Time taken, t = 30 seconds
1 second = (1/3600) hour
Speed = distance/time
So, the speed of the ball is 600 mph.