Sandy had $217 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 = 217 x = 310 the answer is c ."
Answer: C