Homework Help: maths

Posted by BRYAN on Sunday, July 1, 2012 at 7:23pm.

Please help!
At a cup cake baking competition, Alan baked 55 fewer cupcakes than Tom while Sally baked twice as many cupcakes as what Alan and Tom baked together. If the three of them baked a total of 1125 cupcakes, how many cupcakes did Tom bake?

Many thanks

maths - Steve, Monday, July 2, 2012 at 12:25am
a = t-55
s = 2(a+t)
a+t+s = 1125

a = 160
t = 215
s = 750

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