The diagram shows two different buttons and their weights.
8 grams
A
12 grams
B
The buttons are sold in bags.
Each bag contains 144 grams of buttons.
a) How many of button A are needed to fill one bag?
b) How many of button B are needed to fill one bag?
A box of buttons contains the same number of each type of button.
It contains 220g of buttons.
c)
How many of each type of button are in the box?



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