The difference between two numbers is 18. If 4 times the second number is 18 less than three times the first number, what is the sum of these two numbers?
Q1. The difference between two numbers is 18. If 4 times the second number is 18 less than three times the first number, what is the sum of these two numbers?
Answer: 90
Explanation: From x − y = 18 and 4y = 3x − 18, solving gives y = 36 and x = 54, so their sum is 90.