Problems on Numbers - General Questions

The sum of three consecutive integers is 84. What is the largest of them?

The difference between a two-digit number and the number obtained by interchanging its digits is 18. What is the difference between the two digits?

Two numbers are such that 4/7 of the first equals the second. If the first is 28, what is the sum of the numbers?

The sum of two numbers is 36 and their difference is 16. What is the larger number?

When 2 times a number is increased by 13, the result is 25. What is the number?