The average sale of car dealership was 15 cars per week. After a promotional scheme the average sale increased to 21 cars per week. The percentage increased in the sale of cars was-

The average sale of car dealership was 15 cars per week. After a promo

1.	The average sale of car dealership was 15 cars per week. After a promotional scheme the average sale increased to 21 cars per week. The percentage increased in the sale of cars was-
A.	9.33%
B.	0%
C.	2$$\frac{6}{7}$$%
D.	40%
Answer» C. 2$$\frac{6}{7}$$%

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The average sale of car dealership was 15 cars per week. After a promotional scheme the average sale increased to 21 cars per week. The percentage increased in the sale of cars was-

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