Did I make a mistake in my moment calculation for the distributed load?

[curtain]

Referring the question and my own worked out solution in the attachment, I could not get to the answer given that is Ra= 200 N, and Rc = 1300 N. Is there any calculation mistake I made?

 

[SteamKing]

Check your moment calculation for the triangular portion of the distributed load. I think there is an error there.