Question: Opening problem A tree next to a fence is 2 ft taller than the fence. One year later the tree grew an additional 0.4 ft.

Opening problem A tree next to a fence is 2 ft taller than the fence. One year later the tree grew an additional 0.4 ft. If the ratio of the height of the fence to the height of the tree is now 5:8, how tall is the fence? Fence Tree Drug treatments A and B are used on small and large kidney stones, with the success rates given below: Treatment A Treatment B Small stones. treatment A: 93%. 81 out of 87 trials successful Small stones. treatment B: 87%. 234 out of 270 trials successful Large stones, treatment A: 73%. 192 out of 263 trials successful Large stones. treatment B: 69%. 55 out of 80 trials successful Which treatmentA or Bseems to be better? Why

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