Sarah saved $25 of the 1/3 needed for a microscope. How much more does she need need to save 1/2 the cost

Answer 1

If Sarah saved $25 of the 1/3 needed for the microscope then Sarah was trying to conjure up $75 to save. The next step is to divide $75 in half to find the cost of that number. $75 divided in half is $37.50. The next step is to figure out how much more she needs to gather in order to save enough for half of the cost of the microscope. To find the answer to the question, I would simply subtract $37.50- $25.00 in order to get an answer of $12.50.