SOLUTION: Amy gets 20% more marks than Joan and 12% more marks than Julie. If Julie gets 75 marks, find the marks obtained by Amy and Joan.

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Question 1128913: Amy gets 20% more marks than Joan and 12% more marks than Julie. If Julie gets 75 marks, find the marks obtained by Amy and Joan.
Answer by Boreal(15235) About Me  (Show Source):
You can put this solution on YOUR website!
12% more than Julie is 75*.12 or 9 more or 84 for Amy
But Amy gets 20% more than Joan
so if x=Joan's, then 1.2 x=84
x=70 for Joan
Joan 70 Julie 75 Amy 84