Their displays are both broken in the same place, so the bottom-left part of a number dows not show up.
For example, the number '6' would appear as '5'.
The sugar being weighed is showing up one gram heavier than it is on the left-hand scales, and one gram lighter than it is on the right-hand scales.
What is the actual total number of grams of the sugar on both sets of scales?
Work out which numbers would not display properly due to the broken section.
The four numbers that would be affected by the broken section are 0, 2, 6 and 8.
Look at the numbers 0, 2, 6 and 8, and figure out which ones would turn into other numbers if their bottom-left did not display.
The scales on the right are displaying a weight that is one gram lighter than the correct weight.
The only number that would work here is '6'.
Try to work out the number on the left-hand scales using the same method.
Answer for 'Failing Scales'
The answer is '14'.