An Enlargement is the only transformation that changes the size of a shape. Two items of information are required to enlarge a shape: the Centre of Enlargement and the Scale Factor. ... If a shape is being enlarged by a scale factor of 2, the distance from the centre of enlargement to each vertex will be twice the size.
First you would do 185-57 which gets you 128 next divide it by 2 which gets you 64 so Angelo has 64 and Dean has 121 stamps and together they have a total of 185
