We had $2800 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:	A) $ 3700	B) $ 4000	C) $ 4300	D) $ 4600	E) $ 4900

Rationale: "let x be the amount of money we started with . 0.7 x = 2800 x = 4000 the answer is b ."
Answer: B