Question

7.
\frac{180}{90} = \frac{x}{15}

Explanation:

Step1: Cross-multiply to isolate $x$

$180 \times 15 = 90 \times x$

Step2: Calculate left-hand side

$2700 = 90x$

Step3: Solve for $x$

$x = \frac{2700}{90}$

Answer:

$30$