Mike wants to buy a new phone. The cost of the phone is $1300. How much more money does Mike need if he already has 40% of the amount he needs? Give me reasons, before answering the question
User
Mike already has 40 / 100 * 1300 = $520. This means he needs 1300 - 520 = $780 more, to buy the phone. So the final answer is 780.
Assistant