Based on the information presented, we can safely infer that the difference between J and r is $60.00 given that s amount would be constant.
Hence from the second part we can make the relationship that :-
3 Units - $60.00
1 Unit - $20.00
So J donated $80.00
R donated $ 20.00
S donated $ 30.00
#Solvingmathsisfun
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