Question

A cockroach covers a distance of 30 m in
1.5 minutes. What is the speed of cockroach?​

Answer 1

Answer:

speed =distance/time

speed=30/1.5

speed=20ms/m ans

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Answer 2

Answer:

1 minutes = 60 second

1.5 minutes = 60 + 1/2 × 60

= 90 second

speed of cockroach = 30 meter per 90 second

then, speed of cockroach per hour

1 hour = 3600 second

30/90 × 3600 = 30 × (3600÷90 )

= 30 × 40

= 1200 m per hour

1.2 km per hour

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