I'm in middle school (8th grade) and this is relatively easy, for me, so...
if each batch of muffins can make 6 muffins, and she makes 2.5 batches of blueberry muffins which will make 15 muffins, she will need to make 7.5 batches of banana muffins to equal 45 muffins and 45 + 15 = 60 muffins.
Here is the math part of it......
1 batch = 6 muffins
She makes 2.5 batches, 2.5 * 6 = 15 muffins
x*6 = 45
divide 6 by both sides to get this
x = 7.5
She needs to make 7.5 batches in order to make the rest of the 60 muffins
