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Forget conventional ways of solving math questions. In DS, Variable approach is the easiest and quickest way to find the answer without actually solving the problem. Remember equal number of variables and independent equations ensures a solution.

Currently, 30% of The Flower Company’s total revenue comes from sales through the Internet. Internetbased sales are projected to increase by 150% in the next three years at The Flower Company. If the projected increase turns out to be accurate, what will be The Flower Company’s Internetbased revenue in three years?

(1) In three years, The Flower Company’s total revenue will be $10,000.
(2) Currently, The Flower Company’s total revenue is $6,000.


When you modify the original condition and the question, you need to figure out the total revenue in the first year. So, there is 1 variable, which should match with the number of equations. So you need 1 equation. For 1) 1 equation, for 2) 1 equation, which is likely to make D the answer.
For 1), there is no information regarding other revenue apart from the revenue from the internet, which is not sufficient.
For 2), since the revenue, $6,000*30%=$1,800, comes from the internet, it is sufficient.
Therefore, the answer is B.


 For cases where we need 1 more equation, such as original conditions with “1 variable”, or “2 variables and 1 equation”, or “3 variables and 2 equations”, we have 1 equation each in both 1) and 2). Therefore, there is 59 % chance that D is the answer, while A or B has 38% chance and C or E has 3% chance. Since D is most likely to be the answer using 1) and 2) separately according to DS definition. Obviously there may be cases where the answer is A, B, C or E.
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I guess the question is wrong since it says "Internetbased sales are projected to increase by 150% in the next three years at The Flower Company"

But actual statement would be "Revenue from Internetbased sales are projected to increase by 150% in the next three years at The Flower Company"
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