The difference between sheila and robbie's ages is 12. the sum of their ages is 42. if sheila is the younger of the two, how old is robbie? respond with an actual answer u very much

Let's say that Robbie's age is represented by r and Sheila's age is represented by s. Since we know that r is greater than s, we can set up a difference equation of r - s = 12. We also know that r + s = 42. Now, we can simply add the two equations and get that 2r = 54, then finally that r = 54. Therefore, Robbie is 54 years old.

Hope this helps!

y for sheila's age
x for Robbies's age
x-y=12
x+y=42
2x=54 then x=27
27-y=12
y=15