How many days does it take before the snail reaches the top of the pit? A snail is at the bottom of a 20 meters deep pit. Every day the snail climbs 5 meters upwards, but at night, it slides 4 meters back downwards. How many days does it take before the snail reaches the top of the pit?
yasummu:
20 days ithink
4 days bcoz 5x4=20
but it slides 4m down each day
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It takes 16 days for the snail before it reaches the top of the pit.
- On the first day, the snail reaches a height of 5 meters and slides down 4 meters at night, and thus the total height reached1 meter.
- On the second day, he reaches 6 meters but slides back to 2 meters.
- On the third day, he reaches 7 meters but slides back to 3 meters. so on...
- On the fifteenth day, he reaches 19 meters but slides back to 15 meters.
- On the sixteenth day, he reaches 20 meters, so now he is at the top of the pit!
- Thus, the snail reaches the top of the pit on the 16th day.
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Step-by-step explanation:
A snail is at the bottom of a 20m deep pit. Each day the snail climbs 5 m upwards, But at night it slides 4m back downwards. How many days does it take the snail to reach the top of the pit?
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