Question 1
The sum of A and B's ages is 55. Twice A's age minus B's age is 17. Find A's age.
A + B = 55
2A - B = 17
Adding the two equations: (A + B) + (2A - B) = 55 + 17
3A = 72
A = 24
Verification: B = 55 - 24 = 31
2(24) - 31 = 17 = 17 ✓
2A - B = 17
Adding the two equations: (A + B) + (2A - B) = 55 + 17
3A = 72
A = 24
Verification: B = 55 - 24 = 31
2(24) - 31 = 17 = 17 ✓