If the cost price of 9 articles is equal to the selling price of 12 articles, then the gain or loss percent is
A25% gain
B25% loss
C20% loss
D20% gain
A25% gain
B25% loss
C20% loss
D20% gain
Related Questions:
A mobile company has a prepaid pack of validity 28 days.To get 15% or more profit, the company thinks about the following strategies
1) Reduce the package validity period to 21 days
2)increase the package validity to 30 days, increase the price by 20%
3)increase the price by 10% reduce the validity to 24 days.
What is more correct about these strategies?