A man cashes a cheque for d pounds and c pence at a bank. Assume that the teller by mistake gives the man c pounds and d pence. Assume that the man does not notice the errors until he has spent 23 pence. Assume further that he then notices that he has 2d pounds and 2c pence. Assume still further that he asks you what amount the check was for. Assuming that you can accept all the assumptions, what is the answer?