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     EduGorilla 
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    Under a given environment during a machining operation, the tool life reduces from 160 min to 40 min, when speed increases from 40 m/min to 80 m/min. If the speed is further increased to 120 m/min, what will be the tool life?

    Options :-

    1. 2 min
    2. 1.78 min
    3. 2.45 min
    4. 20 min
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