Sandy had $231 left after spending 30% of the money she took for shopping. How much money did Sandy take along with her? Options
A) $ 270
B) $ 290
C) $ 310
D) $ 330
E) $ 350

Rationale: "let the money sandy took for shopping be x . 0.7 x = 231 x = 330 the answer is d ."
Answer: D