We had $840 left after spending 30% of the money that we took for shopping. How much money did we start with?  Choose the correct choice from the following answers
A) $ 1000  B) $ 1050  C) $ 1100  D) $ 1150  E) $ 1200

Rationale: let x be the amount of money we started with . 0.7 x = 840 x = 1200 the answer is e .
Answer: E