math
posted by raza .
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.

23360 someone else told me i dont know how
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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 …