Question

One machine each of type a AND b can complete a project in 12 days and same project is completed in 9 days when two machines of type and one machine of type work together. The number of days taken to complete the project when 4 machines of type and 7 machines of type work together is equal to : 3 2 4 1

Answer 1

Answer:

Yes you are right with your answer

Answer 2

Answer:

2

Step-by-step explanation:

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