Question

find the number that makes the ratio equivalent to 30:1.
□:3

Explanation:

Step1: Recall ratio equivalence

For two ratios \(a:b\) and \(c:d\) to be equivalent, \(\frac{a}{b}=\frac{c}{d}\). Here, we have \(30:1\) and \(\square:3\), so \(\frac{30}{1}=\frac{x}{3}\) (let \(x\) be the unknown number).

Step2: Solve for \(x\)

Cross - multiply: \(x = 30\times3\).
Calculate \(30\times3 = 90\).

Answer:

90