Final answer:
Mrs. Santos used 3/4m more material for the dress than for the blouse.
Step-by-step explanation:
To find out how much more material Mrs. Santos used to make a dress than a blouse, we need to subtract the amount of material used for the blouse from the amount of material used for the dress.
Mrs. Santos used 1 3/4m of material for the blouse, and 2 1/2m of material for the dress.
To subtract fractions, we need a common denominator. The common denominator of 4 and 2 is 4. So, we can rewrite 1 3/4 as 7/4 and 2 1/2 as 5/2.
Now, we can subtract: 5/2 - 7/4 = 10/4 - 7/4 = 3/4.
Therefore, Mrs. Santos used 3/4m more material for the dress than for the blouse.
Learn more about subtraction