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1 . Lilly, Margaret and Nancy were each left $12000 in their uncle's will.
a) Lilly decided to spend her money on clothes, holidays and decorating her
flat, in the ratio 4 : 5 : 7. How much did she spend on decorating her flat?
b) Margaret invested her money in a bank at 11% simple interest for 3 years.
Calculate the total amount of money she had in her bank account after 3
years.