Answer:
500g plain flour, 350g butter, 200g caster sugar, 100g smooth peanut butter, 100ml milk
Explanation:
20÷8= 2.5
multiply each by 2.5
200n (n=2.5) = 500
140n = 350
80n = 200
40n = 100
40n = 100
I'm sorry if this is wrong, but I think this is how you answer it