Hi Diamond H
A. 10 .
You can let Marcos age = x
Since Yolandas age is 5 less than twice Marcos age
Yolandas age = 2x - 5
Since we are given that Yolanda is 15 then
Yolanda age = 2x - 5 = 15
2x - 5 = 15
Solve this for x
2x = 15 + 5
2x = 20
x = 10
So Marco is 10
Hope this helps
Diamond H.
Thanks!!!!!08/27/21