Question Need help with rca and hdmi cables ASAP

[pearce_pc]

Right just going to make this quick and simple. I need to run one rca cable 20 metres from pc to speakers and 2 hdmi cables from monitor to pc 20 metres. Any links that's reliable and not expensive. thanks

 

[R_1]

RCA max length 100 ft. no problems
https://www.techwalla.com/articles/the-maximum-length-of-an-rca-cable

HDMI max length 45 feet. this is a problem. you will need an amplifier for the HDMI each way.
https://www.bluejeanscable.com/articles/how-long-can-hdmi-run.htm