Question 1143210

Solution to this problem:
Tim's age plus Cheryl's age is 80.
Tim's age plus Greg's age is 98.
Cheryl's age plus Greg's age is 94. What are their ages?
<pre>Let Tim's, Cheryl's, and Greg's ages be T, C, and G, respectively
Then we get: T + C     = 80 ------ eq (i)
       Also, T     + G = 98 ------ eq (ii)
       And,      C + G = 94 ------ eq (iii)
                 C - G = - 18 ---- Subtracting eq (ii) from eq (i) ---- eq (iv)
                    2C = 76 ------ Adding eqs (iv) & (iii)
C, or {{{highlight_green(matrix(1,6, Craig, "is:", 76/2, "=", 38, years-old))}}}
Find Cheryl's and Greg's ages on your own!