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Q) The market for widgets is perfectly competitive if there is a reduction in the wages paid to workers in this industry, in the short run: a) total revenue will increase if demand is unit elastic b) total revenue will increase if demand is inelastic c) consumer surplus will decrease d) total...

A horizontal trough is 8m long and has a vertical cross section in the form of a trapezoid. The bottom of the trough is 65cm wide and the sides areinclined to the vertical at an angle of 30 degrees. Water is poured into the trough at a rate of 1500cm^3/min, How fast is the water level rising...