The sum of two numbers is 45. Four times the first number is 9 less than five times the second. What are the two numbers?
Q1. The sum of two numbers is 45. Four times the first number is 9 less than five times the second. What are the two numbers?
Answer: 24 and 21
Explanation: From x + y = 45 and 4x = 5y − 9, substituting x = 45 − y gives 4(45 − y) = 5y − 9, which solves to y = 21 and x = 24.