Nina has exactly enough money to purchase 6 widgets. If the cost of each widget were reduced by $1, then Nina would have exactly enough money to purchase 8 widgets. How much money does Nina have?
Choose the correct choice from the following:
A) $ 22
B) $ 24
C) $ 30
D) $ 36
E) $ 40

Rationale: "b its is . let price = x ( x - 1 ) 8 = 6 x x = 4 hence total money = 6 * 4 = 24"
Answer: B