個CASE係A請B幫佢裝修五間屋,完成後會俾返五十萬裝修費俾B,咁B係七月開始裝修.但當B裝修到第二間屋時,發現完工進度要比想像中遲.同埋問A要多五萬去買額外既材料.A就同意會將依五萬加入去個五十萬到,.另外同B講如果B可以係8月25號完工到.就會再俾多額外十萬俾B.咁最後B係8月20完工.但A話佢有財政困難.要求B接受五十萬in full settlement of A account.B接受左.但後尾發現原來A既財政困難其實唔係咁嚴重,於想想問A拎返個十萬
問題如下
1.was a promise to pay the extra $50,000 a binding variation of the contract?
2.was a promise of an extra $100.000 if the work is completed by 25 agust a binding varation of the contract?
3.is b promise to take the $500,000 in full settlement binding on b ?