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Tip. Top Corp, produces a product thet requires 7 standard hours per unit at a standard hourly rate of 58 per hour. If 6,300 units required 45 , 000 hours atan hourly rate of 57,66 per hour, what is the direct labor (a) rate vanance, (b) timen vanance, and (c) cost varianion? Enter a favorable variance as a fiegative number using a minus sign and an unfavorable variance as a positive number