two ants of length 1 cm and 1.2 cm crawl in opposite direction with average speed 2 and 3 mm per second respectively .how many seconds will they take to
cross each other
Answers
Answer:
4.4
Step-by-step explanation:
1+1.2 =2.2
2.2*10=22mm
2+3=5mm
time=22mm/5mm=4.4mm
Given : two ants of length 1 and 1.2 cm crawl in opposite directions with the average speed 2 and 3 mm per second respectively .
To Find : How many seconds will they take to cross each other
Solution:
Lengths are 1 cm and 1.2 cm
1 cm = 10 mm
1.2 cm = 12 mm
Total Distance to be covered = 10 + 12 = 22 mm
Moving towards each other hence speed will be added
so Speed =2 + 3 = 5 mm / s
Time = Distance / Speed
=> Time = 22/5
=> Time = 4.4 secs
Hence 4.4 secs will be taken to cross each other.
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