The average sale of car dealership was 15 cars per week…

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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-

  1. A. 39.33%
  2. B. 40%
  3. C. 42$$\frac{6}{7}$$%
  4. D. 140%

Answer: Option B

Here is complete explanation of The average sale of car dealership was 15 cars per week….

Solution(By ExamCraze Team)

Number of cars sold per week originally = 15 × 7 = 105
Number of cars sold per week under scheme = 21 × 7 = 147
Increase in sale = 147 - 105 = 42
∴ Percentage increase
$$eqalign{ & = left( {frac{{42}}{{105}} times 100} right)% cr & = left( {frac{{4200}}{{105}}} right)% cr & = 40% cr} $$

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