Respuesta :

There are 24 + 48 = 72 marbles in total.

48/72 = 2/3 = 66.6...%
In this scenario, you just add the two numbers together, and then take 48/72 (72 was what we got when we added the two numbers) and turn it into a percentage leaving us with 6.666...%

Hope this helped!
P.S if you gave brainliest to someone, even if it wasn't me, that would be great :)