### Home > CAAC > Chapter 1 > Lesson 1.1.3 > Problem1-25

1-25.
1. In Algebra, you will need to be able to work with numbers, words, and geometric representations. Use these representations to answer the following questions. Homework Help ✎

1. Write another fraction that is equivalent to . Draw diagrams to show that they are equal.

2. Find the equivalent decimal for both fractions. Was rounding your answer necessary?

3. Find the equivalent percent for both fractions.

Try multiplying by a fraction equal to 1.

$\frac{4}{5}\cdot \frac{2}{2}=\frac{8}{10}$

$\frac{8}{10}=0.8$

Rounding was not necessary.

Percent means 'per hundred' or 'out of a hundred'.

Try setting it up as a proportion to 100.

Multiply the top and bottom by 20 to make the denominatorequal to 100 and solve for x.

$\frac{4}{5}=\frac{x}{100}$

$\frac{4}{5}\cdot \frac{20}{20}=\frac{80}{100}$

x = 80 so,
x = 80%