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Analysis of mathematical problems of snail climbing wall
1 1 hour 1 1/4 hours

(1) only climbed two feet in two hours, and only climbed one foot in average 1 hour, so it took eleven hours.

(2) Climbing to the corner is downward, so you can climb 8 feet in 2 hours and 4 feet in 1 hour, so it takes 1 1/4 hours.