Question

The sum of two numbers is 10. One number is 4 times the other. Find the number

Answer 1

How easy! Just list all the factors that add up to ten.

10 + 0

9 + 1

8 + 2

7 + 3

6 + 4

5 + 5

Which ones match the requirements?

Answer 2

The answer is 8+2.
In 8+2, 8 is 4 times 2. (2 ×4 = 8)