Ben is 20 years older than Daniel. Ben and Daniel first met two years ago. Three years ago, Ben was 3 times as old as Daniel. How old is Ben now?

let's say Daniel's age is x and Ben's age is 3x or x+20

3x=x+20

2x=20

x=10

Daniel was 10 three years ago, Ben was 30, now he is 33

i think its a and d

step-by-step explanation:

check above link.

graphically?   well, you graph them both, the solutions is where they both intersect each other, since there are two solutions, meaning they will meet twice, or namely the linear will run into the quadratic curve twice, and where they meet, those x,y coordinates are the solutions to the system.