Solution: Let $ x $ be the number of successful tasks in the additional 10 attempts. Initially, successful tasks = $ 0.85 imes 40 = 34 $. Total tasks after 10 more = $ 50 $. Total successful tasks = $ 34 + x $. New success rate: $ rac{34 + x}{50} = 0.88 $. Solving: $ 34 + x = 44 $, so $ x = 10 $.

Fri, 17 Apr 2026 18:24:04 +0000

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