math

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On the 1st of January 2014, Carol invested some money in a bank account. 

The account pays 2.5% compound interest per year. 
On the 1st of January 2015, Carol withdrew £1000 from the account. 
On the 1st of January 2016, she had £23 517.60 in the account. 

Work out how much Carol originally invested in the account?

PLEASE SHOW WORKING OUT. THANKYOU.

  • math -

    23360 someone else told me i dont know how

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