The greatest common factor of 30, 48, 60

Hello there!

First, let's establish what the greatest common factor means.
The greatest common factor is the highest factor in value that's in comparison to all numbers.

For example;
2, 4, and 8. Find the GCF.

2 = 1 x 2
4 = 1 x 4, 2 x 2
8 = 1 x 8, 2 x 4

These numbers all have 2 as the highest number in common, so 2 is the GCF in this example.

Now, let's try with our current numbers.

30 = 1 x 30, 3 x 10, 5 x 6
48 = 1 x 48, 2 x 24, 3 x 16, 4 x 12, 6 x 8
60 = 1 x 60, 2 x 30, 3 x 20, 4 x 15, 5 x 12, 6 x 10

All of our numbers have these common factors:
1, 2, 3, 5, 6.

The greatest number is 6, so our GCF is 6.

I hope this helps!

Yes you do, so £1973.09 - £1473.50 = £499.59 so tim overpaid £499.59 .hope this ; )