Question

Kelly has a ribbon that 60 inch long she cuts 40% of the ribbon for an art project while working on the project she decided she only needs 75% of the piece she cut off how many inches of ribbon does Kelly end up using for her project

Answer 1

In order to compute percentages, just divide the total by 100, and multiply by the percentage you're looking for.

So, 40% of 60 is

$60\cdot \dfrac{40}{100} = 60 \cdot \dfrac{4}{10} = 6\cdot 4 = 24$

Similarly, 75% of this amount is

$24 \cdot \dfrac{75}{100} = 24\cdot \dfrac{3}{4} = 6\cdot 3 = 18$

Notice that you could have done this in one step by computing

$60 \cdot \dfrac{40}{100} \dfrac{75}{100} = 18$

So, she used 18 inches of ribbon