Question

find the number that makes the ratio equivalent to 15:25.
□:100

Explanation:

Step1: Let the unknown number be \( x \).

We know that equivalent ratios can be set up as a proportion. So, \( \frac{15}{25}=\frac{x}{100} \).

Step2: Cross - multiply to solve for \( x \).

Cross - multiplying gives us \( 25x = 15\times100 \).

Step3: Calculate the right - hand side.

\( 15\times100 = 1500 \), so the equation becomes \( 25x = 1500 \).

Step4: Solve for \( x \).

Divide both sides of the equation by 25: \( x=\frac{1500}{25}=60 \).

Answer:

60