A contractor needs to excavate 50,000 yd3 of silty clay and haul it with Caterpillar 69C dump trucks. Each truck can carry 30.9 yd3 of soil per load, and operates on a 15-minute cycle. The job must be completed in five working days with the trucks working two 8-hour shifts per day. Using a bulking factor of 30%, how many trucks will be required
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