Question

solve for a.
10
15
6
o 10
o 30
o 15
o 25

Explanation:

Step1: Identify similar triangles

The two triangles are similar.

Step2: Set up proportion

$\frac{6}{10}=\frac{15}{A}$

Step3: Cross - multiply

$6A = 15\times10$

Step4: Solve for A

$A=\frac{15\times10}{6}=\frac{150}{6}=25$

Answer:

B. 30