Answer:
To find the percentage of 2 1/2 cm in 7 1/2 cm, we need to divide 2 1/2 by 7 1/2 and then multiply the result by 100 to get the percentage.
First, let's convert the mixed fractions into improper fractions:
7 1/2 = (7 x 2 + 1)/2 = 15/2
2 1/2 = (2 x 2 + 1)/2 = 5/2
Now, we can divide 5/2 by 15/2:
(5/2) ÷ (15/2) = 5/2 x 2/15 = 1/3
So, 2 1/2 cm is 1/3 of 7 1/2 cm.
To convert this fraction to a percentage, we need to multiply by 100:
1/3 x 100 = 33.33%
Therefore, 2 1/2 cm is 33.33% of 7 1/2 cm.