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A machine produces 312 bolts in 30 minutes. At the same rate, how many minutes would it take to produce 260 bolts?
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A machine produces 312 bolts in 30 minutes. At the same rate, how many minutes would it take to produce 260 bolts?

User Ddtraveller
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1 Answer

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312 bolts in 30 mins
or 312 bots in 1800 seconds

Time for 1 bolt is 1800 / 312 = 5.77secs (rounded to two figures)

260 bolts would take:
260 x 5.77 = 1500secs (rounded)

1500secs = 1500 / 60 mins = 25mins
User Christian Neverdal
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