A company charges $6 for standard delivery and $10 for express delivery. For every ая 5 deliveries in December, 4 were standard and I was express. The company received $850 for deliveries in December. How many deliveries were express deliveries?
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Answer:
850-24/10=826/1082.6
Step-by-step explanation:
4 standard delivery= 6x4=24
850-24/10
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