ROG:
bald bloke:
ROG:
4 on 4 off means you are working 50% of each week on average
If doing 13 hour shifts that is a 52 hour week
If doing 3 x 15 + 1 x 13 = 58 hour week on average4 x 13 hr shifts is 52 hrs Rog you’re right but some weeks will be 39 hrs so an overall average would be lower than 52 hrs.
I stand corrected
3.5 shifts of 13 = 45.5 hours
But that is assuming one is doing 13 hours. For the job (delivering bulk animal feed to framers) that was the claim but with hourly pay one cannot be quite sure. I’d rather be on a day rate or even a weekly rate… at least one can budget better.
Don’t worry about maths 
It’s a good subject - I used to teach it.
More important at present is just getting shopping done which is difficult if tramping. Now that one is limited to TWO of any item (Tesco anyway) - things are not going to be easy for some time.