Answer:
140
Step-by-step explanation:
A triangle equals 180 and you subtract 180 to 15 and 25 and you get 140.
I think the answer should be 20
13/27 = ?/324
Since 324 divided by 27 is 12, you multiply 13 by 12 to get '?'
13*12= 156
13/27 = 156/324
? = 156