Last year Kate bought a car from Orlando for 2,500 to be paid in two instalments of 1,250

Last year Kate bought a car from Orlando for 2,500 to be paid in two instalments of 1,250. Kate did not pay the second instalment when it was due. She has never disputed that she owed Orlando this money.
Orlando felt sorry for Kate, who lost her job not long after buying his car. He told her that if she paid him the half of what she owed him (625) by the following Wednesday, he would let her off the rest.
Kate paid him the 625 on the following Tuesday. She also gave him a bottle of wine in consideration of his kindness.
On the Friday Kate was notified that she had been successful in one of her job applications and would be starting work at a much better salary than her old job on the First of the Month.
Orlando has heard about Kates new job and realises she is likely to be earning more than he is. He now wishes to claim the rest of the money which she had originally agreed to pay for the car.
Advise Orlando.
First Paragraph: Talk about the issues in the problem question, then say which rules are included in the problem question which are (Promissory Estoppel and Part payment debt).
Second Paragraph: Talk about what is promissory estoppel
Third Paragraph: Talk about what part payment debt is
Fourth Paragraph: Analyse the problem between Orlando and Kate that concerns promissory Estoppel
Fifth paragraph: Analyse the problem between Orlando and Kate that concerns part payment debt
Sixth paragraph: Advise Orlando