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Rufina [12.5K]
3 years ago
7

Electric saw A cuts planks at a uniform rate of 150 every 30 seconds, and Electric saw B cuts planks at a uniform rate of 130 ev

ery 13 second. Of the 2 saws run simultaneously, how many seconds will take for them to produce a total of 225 planks
Mathematics
1 answer:
aleksley [76]3 years ago
3 0

Saw A = 150 planks/30 seconds = 5 planks per second

Saw B = 130 planks/ 13 seconds = 10 planks per seconds

5 + 10 = 15 planks per second total

225 planks / 15 planks per second = 15 seconds

Answer: 15 seconds

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