Give the step-by-step reasoning process and then the final answer. Erika and her brother Rick want to buy a gift for their mother that costs $250. They have both saved money. Erika saved $155 and her brother saved only half of the cost of the gift. They also want to surprise their mother with a birthday cake that costs $25. How much money will they have left after buying their mother a gift and cake?
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Rick's savings are half the price of the gift, which is $250 / 2 = $125. The total savings for the two siblings is $155 + $125 = $280. Mom's gift costs $250 + $25 for the cake = $275. Subtracting the total cost of the gift from the total savings, we get $280 - $275 = $5 left.
The final answer: 5.
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