Answer:
225
Step-by-step explanation:
since the first number is 360 and the second number is twice the first number meaning it's (360×2) which is 720,you have to add the two and subtract by 1305 to find the value of the third number(which I have represented by x)
360+720+x=1305
1080+x=1305
x=1305-1080
=225
therefore the third number is 225,you can prove it by adding the three to see whether you will get 1305.
I hope this helps
