The length of the ruler is 180 cm. The first snail moves for 12 minutes and sleeps for 6 minutes.
| December 18, 2020 | education
The length of the ruler is 180 cm. The first snail moves for 12 minutes and sleeps for 6 minutes. The second moves for 6 minutes and sleeps for 12 minutes. The speed of each snail is 1cm / minute. How long will they meet?
1) 12 multiplied by 1 is 12 (km) – 1 snail passes in 12 minutes
2) 6 times 1 is 6 (km) – the second snail passes in 6 minutes
3) 12 + 6 = 18 (km) approach speed
4) 180: 1 = 180 (m) -the time after which they meet
Answer: after 180 minutes
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