Simultaneously 3157

The first machine closes 65 closing bottles per minute. The second machine closes five bottles less at the same time. How many minutes will both machines close 2,500 bottles if they work simultaneously?

Correct answer:

x =  20 min

Step-by-step explanation:

65x+(65-5)x = 2500

65·x+(65-5)·x = 2500

125x = 2500

x = 2500/125 = 20

x = 20

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