Solve each problem. Write your solution and answer
1. Jose paints a wall in 5 days. If Jose and Alfred work together for at most 2 days, what must be the minimum rate of alfred to complete the job?
2. A certain amount of pure water is added to 10 liters of a 70% alcohol solution to make at most certain 40% alcohol solution. How many liters must be added?
Hep :((
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Answer:
the answer is 80 %off because b is vommon
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