30tons/day * 2000lb/ton * 1day/24hr * 1hr/60min = 125/3 lb/min
see how the units cancel out.
A mining company removes 30 tons of rock from a quarry everyday. If the company works around the clock (24 hours per day), how many pounds of rock are moved every minute? This is a homework question and I need help on it ;-;
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