Question

What is the common difference in the sequence: 60, 55, 50...?

Answer 1

`-5`

Explanation:

We now our starting number is `60`, so how to we go from this to `55`? Well one way would be to subtract `5`.

How do we go from `55` to `50`? Once again, we can subtract `5`. Using this pattern, we can say the next few terms are:

`...45, 40, 35, 30, 25, 20...`

Notice, to get from a particular term to the next, we are subtracting `5` every time. This means our common difference would be `-5`.

Hope this helps!