The difference between two numbers is 3600. The greater number is 6 times the smaller number. Find the sum of the two numbers.

Question

The difference between two numbers is 3600. The greater number is 6 times the smaller number. Find the sum of the two numbers.

Answer 1

There are two unknown numbers: the lower one and the higher one. Make the lower one x, make the higher one 6x (6 times the lower one):

The main question: What is 6x+x, if 6x-x=3600?

6x-x=3600

5x=3600

x=720

6x=3600+720=4320

Find the sum of the two numbers:

6x+x=4320+720=5040