Question 1114550
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They each have two tubs; so those numbers of chocolates are the same.<br>
Not counting the tubs, Arthur has one bag of chocolates and 25 loose chocolates; Oliver has two bags and 7 loose.  If they both have the same total number of chocolates, then the difference in the number of loose chocolates they have (25-7=18) must be the number of chocolates in a bag.<br>
There is no information given, in the problem as you show it, that allows us to determine the number of chocolates in a tub.<br>
Answers:  chocolates in a bag: 18.  chocolates in a tub: unknown.